The radii of two right circular cylinders are in the ratio 3 : 4 and their heights are in the ratio 1 : 2. Calculate the ratio of their curved surface areas

Answers

Answer 1

Answer:

18.852:50.272

Step-by-step explanation:

Step one:

given

The radii of two right circular cylinders are in the ratio 3 : 4

r1= 3

r2= 4

Their heights are in the ratio 1 : 2

h1= 1

h2= 2

Step two:

The expression for the curve surface area is

CSA= 2πrh

CAS1=  2πr1h1

CAS1=  2*3.142*3*1

CAS1=  18.852

CAS2=  2πr2h2

CAS2=  2*3.142*4*2

CAS1=  50.272

The ratio of their curved surface areas

=18.852:50.272


Related Questions

2/5+3/4 please help me

Answers

Answer:

1.15 correct me If I am wrong

Step-by-step explanation:

Answer:

23/20

Step-by-step explanation:

The enrollment at a community
college this year is 115% of last year s
enrollment. If there were 1,240
students enrolled at the college last
year, how many students are there
this year

Answers

Answer:i think its -186 hope it helps

Step-by-step explanation:

Math isn’t my best subject but I’ll give it a shot. Feel free to correct me.

115% of 1,240 would be 1,426 students

I’m not sure if you have to add the 1,240 students, but if that’s the case it would be 2,666 students.

Correct me if I’m wrong, and sorry if I am.

Hope this at least helps you.

Put the following equation of a line into slope-intercept form, simplifying all
fractions.
8y-2x=-72

Answers

Answer:

y = 1 4 x − 9

Step-by-step explanation:

Write in slope-intercept form,  y = m x + b .

Answer:

y = 1/4x - - 9

General Formulas and Concepts:

Pre-Algebra

Equality Properties

Algebra I

Slope-Intercept Form: y = mx + b

m - slope b - y-intercept

Step-by-step explanation:

Step 1: Define

8y - 2x = -72

Step 2: Rewrite

Find slope-intercept form

Add 2x on both sides:                    8y = 2x - 72Divide 8 on both sides:                  y = 1/4x - - 9

Pls help will give brainilist

Answers

Answer:

1566 units^2

Step-by-step explanation:

34×28=952

34×9=306

28×11=308

952+306+308=1566

Answer:

1259 sq units

Step-by-step explanation:

Area of rectanlge; (A=bh)       A=34 x 28 = 952

Area of left triangle; (A=bh/2)    A=(28 x 11) /2 = 154

Area of abovle triangle; (A=bh/2)    A=(34 x 9) /2 = 153

Sum of area of all three figures = 1,259

what number is lower -162 or 159

Answers

Answer:

-162

Step-by-step explanation:

Answer:

-162

Step-by-step explanation:

because -162 is negative

can someone please wright me an equation for this and answer it. and also answer this.
find the 5th and 20th terms in the arithmetic sequence.

Answers

Answer:

3x-5=81

hope my answer is helpful to you

plz mark me as brainlist and also follow me

Q.10...In a cookie mix, we find chocolate chip cookies, spice cookies, and ginger cookies in a ratio of 4 : 3 : 3. If a bag of the mix contains 33 ginger cookies, how many chocolate chip cookies are there?

Answers

Answer:

13.2

Step-by-step explanation:

Let 4x represent the chocolate chip cookies

Let 3x represent the spice cookies

Let 3x represent ginger cookies

4x + 3x + 3x = 33

10x = 33

x = 33/10

x = 3.3

Since 4x represents chocolate chip cookies

4 × 3.3

= 13.2

Hence there are 13.2 chocolate chip cookies

Divide 3ab by 2c in algebraic expression

Answers

Answer:

[tex]\frac{3ab}{2c}[/tex]

Step-by-step explanation:

An algebraic expression is an expression consists of constants, variables, and the algebraic operations: addition, subtraction, multiplication and division.

Given: algebraic expressions are [tex]3ab,2c[/tex].

To divide: [tex]3ab[/tex] by [tex]2c[/tex]

Solution:

[tex]\frac{3ab}{2c}[/tex]

There are no common terms in numerator and the denominator.

So, answer is [tex]\frac{3ab}{2c}[/tex]

3x+10, -2x+40, and x+40.

What is the value of x?

Answers

Answer: 2

Step-by-step explanation:

what if you helped me

Answers

Answer:

Maximum value of z = 21

Minimum value of z = -9

Step-by-step explanation:

We have to maximize/minimize the given equation for the given constraints as,

x ≥ -1

y ≤ -2x + 3

y ≥ -1

By using the graphing tool,

Corner points for the feasible region are,

A(-1, 5), B(-1, -1) and C(2, -1)

For A(-1, 5),

z = 4x + 5y = 4(-1) + 5(5)

                  = -4 + 25

                  = 21

For B(-1, -1),

z = 4(-1) + 5(-1)

  = -4 - 5

  = -9

For C(2, -1),

z = 4(2) + 5(-1)

  = 8 - 5

  = 3

Maximum value of z = 21

Minimum value of z = -9

In a survey of 3,400 people who owned a certain type of​ car, 1,700 said they would buy that type of car again. What percent of the people surveyed were satisfied with the​ car?

Answers

Answer:

50%

Step-by-step explanation:

Calculation for What percent of the people surveyed were satisfied with the​ car

Using this formula

Percentage of people satisfied=Owners of car/Numbers of people to buy the same car again

Let plug in the formula

Percentage of people satisfied=1,700/3,400 people*100

Percentage of people satisfied=0.5*100

Percentage of people satisfied=50%

Therefore the percentage of the people surveyed who were satisfied with the​ car is 50%

1/2 (p+3) = 7

Please help! ​

Answers

Answer:

p = 11

Step-by-step explanation:

[tex] \frac{1}{2} \times (p + 3) = 7[/tex]

[tex] = > p + 3 = 7 \div \frac{1}{2} [/tex]

[tex] = > p + 3 = 7 \times 2 = 14[/tex]

[tex] = > p = 14 - 3 = 11[/tex]

Nicholas read a total of 20 books over 4 months. If Nicholas has read 45 books so far, how many months has he been with his book club? Assume the relationship is directly proportional.

Answers

Answer:

5 months

Step-by-step explanation:

45-20=25

25/5=5

Answer:

5 months

Step-by-step explanation:

ayeeee


Christian is training for a swimming competition He starts swimming 10 ft. from the shore to his boat The table below represents the distance from the shore. f(z), as a function of time after z minutes of swimming.

Answers

Answer:

f(x) = 20x + 10

Step-by-step explanation:

(0 , 10) ; (3 , 70)

Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]

          [tex]= \frac{70-10}{3-0}\\\\= \frac{60}{3}\\\\= 20[/tex]

y- intercept = 10

f(x) = mx + c

     = 20x + 10

Here is an inequality: -2x>12 select 3 values for x that would make this inequality true

Answers

Answer:

x = -7 .... x = -8 ..... x= -10

Step-by-step explanation:

-2 * -7 = 14

-2 * -8 = 16

-2 * -10 = 20

what is the answer to -4-8×+2-15

Answers

-25x because you negative four then subtract 8x then add 2 then subtract 18 then equals to -25x

help mee please i’ll give you brainlest no capppp

Answers

Hold up let me calculate

Un taxista compra un coche el 1 de enero de 2013 por 30.000 € . El coche tiene una vida útil de 10 años y un valor residual de 3000 €. El 30 de junio de 2015 vende el coche por 25.000 € . ¿ Qué beneficio ha obtenido?

Answers

Answer:

El taxista obtiene un beneficio de 1.750 € por la venta del taxi el 30 de junio de 2.015.

Step-by-step explanation:

El coche experimenta depreciación a medida que cubre su vida útil hasta caer a su valor residual, es decir, el valor del bien al término de su vida útil. En primer lugar, derivamos una ecuación del precio actual del coche en función del tiempo transcurrido bajo el supuesto de que existe una relación lineal:

[tex]C(t) = C_{o} + \frac{C_{f}-C_{o}}{\Delta t} \cdot t[/tex], para [tex]0\leq t\leq \Delta t[/tex] (1)

Donde:

[tex]C(t)[/tex] - Precio actual del coche, medido en euros.

[tex]C_{o}[/tex] - Precio inicial del coche, medido en euros.

[tex]C_{f}[/tex] - Precio residual del coche, medido en euros.

[tex]\Delta t[/tex] - Vida útil del coche, medida en años.

[tex]t[/tex] - Tiempo actual del coche, medida en años.

El precio actual del coche se obtiene a partir de los siguientes parámetros:

([tex]C_{o} = 30.000\,EUR[/tex], [tex]C_{f} = 3.000\,EUR[/tex], [tex]\Delta t = 10\,yr[/tex], [tex]t = 2.5\,yr[/tex])

[tex]C(t) = 30.000\,EUR +\left(\frac{3.000\,EUR-30.000\,EUR}{10\,yr} \right)\cdot (2.5\,yr)[/tex]

[tex]C(t) = 23.250\,EUR[/tex]

El beneficio derivado por la venta del coche ([tex]\Delta C[/tex]), medido en euros, se obtiene mediante la siguiente sustracción:

[tex]\Delta C = V-C[/tex] (2)

Donde:

[tex]V[/tex] - Precio de venta del coche, medido en euros.

[tex]C[/tex] - Precio actual del coche, medido en euros.

Si tenemos que [tex]V = 25.000\,EUR[/tex] y   [tex]C = 23.250\,EUR[/tex], el beneficio obtenido por la venta es:

[tex]\Delta C = 25.000\,EUR-23.250\,EUR[/tex]

[tex]\Delta C = 1.750\,EUR[/tex]

El taxista obtiene un beneficio de 1.750 € por la venta del taxi el 30 de junio de 2.015.

8. Write a multiplication expression
that you can use to find

Answers

Answer:

random equation 8x5

Step-by-step explanation:

I really dont understand

Answer:

You didn't quite finish the question. Please explain the question or else you will be marked by Brainly for giving out the wrong information.

- Thank You,

               Brainly HGF Bot

1. 100= 125x^2 find x using logarithms

Answers

Answer:

Step-by-step explanation:

Answer:

x =2√55,−2√55

Decimal Form:  x=0.89442719…,−0.89442719…

Step-by-step explanation:

The ratio of girls to boys is ms. Harrington's class is 5:7. If there are 60 students in all of her classes then how many are girls?

Answers

Answer:

25

Step-by-step explanation: Because if you add 5+7=12 60/12=5 5*5=25 so thats your awnser

Write a real-world example for the following algebraic expression: 2x - 2

Answers

Answer:

At the store every lollipop coasts $2 you have a coupon that will give you $2 off any purchase.  

Step-by-step explanation:

2= the coast for each single lollipop

x= the number of lollipops you buy

-2= the $2 taken off your purchase due to your coupon

you need a piece of paper to measure 64.25 cm. if u tape two together that each measure 38.4 cm, how much do u need to cut off?

Answers

Answer:

Already answered https://brainly.com/question/369421

Step-by-step explanation:

simplify expression 7yz / -2
A -7/2 z

B-7/2 y

C 7/2 y

D 7/2 z

Answers

Answer:

Are sure the question is correct please

because the answer is not in the objective answers which is - 7/2 yz.

Please check your out again carefully.

Please help ASAP simplify the expression given below

Answers

Answer:

The correct answer is B.)

Step-by-step explanation:

How many questions was the test? Was it 34 or 44?

The expression (x² + 3) / (x-3)(x-1) is the simplified form of the given expression. which is the correct answer would be an option (B).

What is the expression?

Expressions are defined as mathematical statements that have a minimum of two terms containing variables or numbers.

The expression is given below as:

(x-3)/(x-1) + 6/(x-3)

To simplify the expression, we can first combine the terms that have a common denominator:

(x-3)²+ 6(x-1) / (x-3)(x-1)

We can simplify the expression further by using the fact that

(x² + 9 - 6x + 6x - 6) / (x-3)(x-1)

Combine the likewise terms and apply the arithmetic operation,

(x² + 3) / (x-3)(x-1)

Thus, the simplified expression is:

(x² + 3) / (x-3)(x-1)

Learn more about Expressions here:

brainly.com/question/21751419

#SPJ2

The price of a computer was decreased by 7% to £500. What was the price before the decrease? Give your answer to the nearest penny.

Answers

Answer:

£ 537.63

Step-by-step explanation:

original price = 100%

selling price = 100% - 7% = 93% = £500

just do the proportion or ratio

[tex] \frac{100\%}{93\%} = \frac{original \: price}{500} [/tex]

OP = 500 x 100% / 93%

OP = £ 537.634

rounded to the nearest penny and become £ 537.63

simplify (3s^8)^-5 write your answer using only positive exponents. help please!!

Answers

Answer:

1 / ( 243s^40 )

Step-by-step explanation:

For this problem, we need to know that a negative exponent simply can be rewritten in the opposing part of the fraction, for this case, the denominator.  So we can simplify as shown:

(3s^8)^-5

= 1 / (3s^8)^5

= 1 / 3^5 * s^8^5

= 1 / 243 * s^40

= 1 / ( 243s^40 )

Cheers.

The expression [tex]\left (3s^8 \right )^{-5}[/tex] is simplified as equal to [tex]\boldsymbol{3s^{-40}}[/tex]

Define exponent.

The amount of times an integer is multiplied on its own is referred to as an exponent.

Given expression is [tex]\boldsymbol{\left (3s^8 \right )^{-5}}[/tex]

Use the formula: [tex]\boldsymbol{\left ( a^m \right )^n=a^{mn}}[/tex] to simplify the expression.

[tex]\left (3s^8 \right )^{-5}=3s^{8\times (-5)}[/tex]

           [tex]=\boldsymbol{3s^{-40}}[/tex]

So, the expression is simplified as equal to [tex]\boldsymbol{3s^{-40}}[/tex]

Fin out more information about the expression here:

https://brainly.com/question/14083225?referrer=searchResults

(12x - 30) = (2x - 5)​

Answers

Answer:

x = 5/2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Equality Properties

Step-by-step explanation:

Step 1: Define

12x - 30 = 2x - 5

Step 2: Solve for x

Subtract 2x on both sides:                    10x - 30 = -5Add 30 to both sides:                            10x = 25Divide 10 on both sides:                        x = 5/2

The length of a planet's orbit around a star is approximately 34,510,000 km.
It takes the planet about 1500 Earth days to complete a full orbit.
What is the planet's average speed in kmh-1 to 3sf?

Answers

Answer:

change days to hours so 1500×24=36000

34510000÷36000=959kmh-1

i need help with this i’m really confused

Answers

Answer:

40) 105 miles (mi)

42) 3.2 centimeters (cm)

Step-by-step explanation:

First determine which part of the ratio corresponds to what. Once you have figured that out, divide by the part of the ratio that corresponds to your given part and then multiply that by the other part of the ratio to derive the quantity.

If a:b

Then a × a/b = b, and b × a/b = a.

You can think of : as "to".

For example, you are given a map with a scale ratio of 1 in : 20 mi, this means that for every inch of the map, there is an actual distance of 20 miles.

So in this situation, the left part of the ratio is the length of the map in inches, and the right part of the ratio is the real distance in miles. For x inches of the map, there is 20 x miles of actual distance. Therefore 3.5 inches has an actual distance of 3.5 × 20 miles or 105 miles of actual distance.

For problem 2, you are given a ratio of 1 m : 2 cm, this means that for every 1 meter of the drawing, there is 2 cm of the plant. Therefore if you have 1.6 meter of the map, then you have 1.6 × 2 cm of the plant or 3.2 cm. For both situations the left part of the ratio is 1 which means that you just multiply by the right part of the ratio by which you are given.

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