explain how you find the Area of a Circle

Answers

Answer 1

Answer:

A=πr2

Step-by-step explanation:

That is the formula to solve areal for a circle.

Answer 2

The Area of a circle is ( = π ² )

Area of a circle is the region occupied by the circle in a two-dimensional plane. It can be determined easily using a formula ( = π ² ) , (Pi r-squared) where is the radius of the circle. The unit of area is the square unit, such as m2, cm2, etc.

is the region covered or enclosed within its boundary. It is measured in square units. Any geometrical shape has its own area. This area is the region that occupies the shape in a two-dimensional plane. So the area covered by one complete cycle of the radius of the circle on a two-dimensional plane is the area of that circle.

As we know, the is equal to of its radius, i.e. π . To find the area of circle we have to know the of the circle.
For example, if the radius of circle is 7cm, then its area will be:
Area of circle with 7 cm radius = πr2 = π(7)2 = 22/7 x 7 x 7 = 22 x 7 = 154 sq.cm.

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Related Questions

Can someone pls help?

Answers

Answer:

4. Drawing 2 is a scale of Drawing 1

A) is 2.5

B) is 7.8

Step-by-step explanation:

13/5.2=2.5

5.2 x 2.5=13

And since we have the scale factor 2.5

and since it decreases in size we divide

19.5/2.5= 7.8

:D correct

Isaac has 1.17 pounds of cat food. He uses 0.13 pound of cat food to feed one cat. How many cats can Isaac feed with the cat food he has?

Answers

9 because 0.13*9= 1.17

Answer:

you have to divide 1.17 divided 0.13

Step-by-step explanation:

heeeeeeeeeeeeeeeelp me

Answers

Answer: 64

Step-by-step explanation:

Cup A got 1600 x 60% = 960. Cup B got 1600 - 960 = 640. Cup A spilled 960 x 40% = 384. Cup B spilled 640 x 70% = 448. 448 - 384 = 64.

64 is right for the reasons in the answer above

Determine if the expressions are equivalent:
1.) 7 +7x; 7 (x + 1/7)
2.) 2.5(3+x); 2.5x plus 7.5
Combine like terms:
3.) 3m-6+m^2-5m+1
4.) 7x+4(2x-6)
5.) b^2+3+2b^2+4-7
6.) 3(p+5)-8+11p
PLEASE HELP I will pick brainiest

Answers

Answer:

See below.

Step-by-step explanation:

1.) 7 +7x

7(x + 1/7) = 7x + 1

2.) 2.5(3+x) = 7.5 + 2.5x

2.5x + 7.5

Yes

3.) 3m-6+m^2-5m+1 = m² - 2m - 5

4.) 7x+4(2x-6) = 7x + 8x - 24 = 15x - 24

5.) b^2+3+2b^2+4-7 = 3b²

6.) 3(p+5)-8+11p = 3p + 15 - 8 + 11p = 14p + 7

The students in Nora's class chose between two options for an assignment. 5/8 of the students chose option 1. If there are 32 students in Nora's class, how many chose option 1?
Will give brainly!

Answers

Answer:

Step-by-step explanation:

32 divide by 8 =4 times 5=20

The height of a plant was 2.5 feet. After 2 weeks, it grew to 4 feet. After 4 weeks, it grew to 5.5 feet. What is the percentage increase in its height at 4 weeks compared with

a. its initial height?

b. its height at 2 weeks?

Answers

B the height at 2 weeks

A teacher put all her students' quiz scores up on the dot plot below. i really need help

Answers

Answer:

100

Step-by-step explanation:

Answer:100 I think.

Step-by-step explanation:They are trying to trick you by making the most get 80s and such.But the logical highest score would be 100. But they may be talking about the one with the most dots.

help thank If you do help FOR 10!!!!!!!!!:D

Answers

Answer:

the color beside the coordinates are the same color as the one on the graph.

Step-by-step explanation:

mark brainliest please

Answer: Rhombus

Step-by-step explanation:

Let's plot this into a graph.

A = (3,5)

B = (5,8)

C = (7,5)

D = (5,2)

As you can clearly see in the image below, the shape is a rhombus.

Do not get confused between rhombus and parallelogram.

In a rhombus, all the four sides are equal and the diagonals intersect at 90 degrees, whereas in a parallelogram, the opposite sides are equal and the diagonals bisect each other.

Mark my answer as the brainliest!

Dylan opened a credit card account with $625.00 of available credit. Now that he has made some purchases, Dylan's account only has $443.75 of available credit. What is the percentage decrease of the amount of available credit in Dylan's account?

Answers

Answer: 45%

Step-by-step explanation:

(625.00 - 443.75) / 625=0.45

0.45 x 100 = 45

Answer: 45 %

Step by step : (625.00-443.75) / 625=0.45

Solve this math problem. Area. the question is in the picture below
Answer me as soon as possible

Answers

D! This is because you multiply all the numbers.

D because you have to multiply 4ft x 8ft x 6ft

noah was assigned to make 64 cookies for the bake sale he made 125% of that number 90% of the cookies he made were sold how many of Noah's cookies were left after the bake sale DUE TOMMOROW

Answers

8 cookies were left after the bake sale.

Answer:

72 cookies were sold and 8 cookies were left after the bake sale.

Step-by-step explanation:

What is the proportional equation for the graph below:

Answers

Answer:

Step-by-step explanation:

y=4/2x

m = slope = (15-0)/(6-0) = 15/6 = 5/2

This graph is linear, so it can represented by the function y = mx + b, where m = 5/2 and b, the y-intercept, is 0.

So the equation for the graph is y = (5/2)x.

Which angles are supplementary to each other? Select all that apply.

Answers

Answer:

Step-by-step explanation:

BEC and AEB as well as CED and AEC

Answer:

Step-by-step explanation:

sorry need points

Which chemical is a reactant in the reaction?

Answers

the anaswer would be a because of its combinations reaction.

A because of its combination reaction

can you guys help me thanks!!!

Answers

C=2*3,14*r
C=2*3,14*7in
C=43,96 in
So its the third answer

The answer is 43.96

C=2πx7

=2x3.14x7

= 43.96 in

A proportional relationship is represented by the equation 2x=18y. If y = kx, where k is the constant of the proportionality, then what is the value of k?

Answers

Dy/Dx formula. The value of k=1/9

Need help! This is my last assignment b4 spring break!

Answers

Answer: If we substitute y = 5, 0, and -5 in the expression 4y + 5, we get:

4(5) + 5 = 25 + 5 = 30

4(0) + 5 = 0 + 5 = 5

4(-5) + 5 = -20 + 5 = -15

Therefore, the values of the expression for y = 5, 0, and -5 are 30, 5, and -15, respectively.

Sorry For Late Answer

Step-by-step explanation:

Answer: 4y + 5

y = −5

Step-by-step explanation: I pretty sure that's it

what is the surface area of a rectangular prism with a length of 7.75 a width of 1.25 and a height of 3

Answers

Answer:

73.375

Step-by-step explanation:

2 ( 7.75 x 3 + 7.75 x 1.25 + 3 x 1.25) =

2 ( 23.25 + 9.6875 + 3.75 )=

2 ( 36.6875 ) =

73.375

PLS ANSWER QUICK FIRST ANSWER BRAINLIEST
Find the value of K. Give your answer in degrees

Answers

Analusis:
Erom the Dictare:;
ACHAR
BUMAD Acconding to the
outer angle therera:
AB+2C= LCAE
Since BLIAR.
LBLA.= LAD = 94°
SO I CRA= 86'
se since LB. +LL+k = 180
284'+K=18
K: 180-168
k=12
the sumof interer amles of triandle

Answer:

Step-by-step explanation:

bulle said yep its 12

I Need this Right NOW

Answers

Answer:

-7

Step-by-step explanation:

First you plug all the terms in. Once you've done that, you realize what tou have is -5-4 -1+-3

First you solve the first part (-5-4) and get -9.

Then you solve the second half (1+-3) and get -2

You then have the equation -9--2

But because you're subtracting a negative, it turns into a positive.

So now our equation is -9+2

And you get -7.

The answer is -7………….

How many triangles can be formed given the following conditions?

Two angles and the included side (Angle-Side-Angle):

Angles: 76
and 34

Included Side: 9 in.

Answers

76 times 34 times 9 and then you get your answer

7 1/15 - 3 4/5
Answers are:
A. 4
B. 3 1/2
C. 4 1/2
D. 3

Answers

Answer:

the answer is a your welcome

Jinny is selling bracelets for $3.50. So far, she has earned $301.00. She needs to earn more than $427.00 in order to meet her goal. How many more bracelets, , does she need to sell in order to reach her goal?
A.
x> 122
B.
x > 36
C.
x > 208
D.
x > 86

Answers

3.50x + 266 = 406
↓
40x
The answer is 40. She needs to sell 40 more bracelets to reach her goal.

Elena and Lin are training for a race. Elena runs her mile a constant speed of 7.5 miles per hour.
Lin’s times are recorded every minute:
time (minutes) 1 2 3 4 5 6 7 8 9
distance (miles) 0.11 0.21 0.32 0.41 0.53 0.62 0.73 0.85 1
1. Who finished their mile first?
2. This is a graph of Lin’s progress. Draw a graph to represent Elena’s mile on the same axes.
3. For these models, is distance a function of time? Is time a function of distance? Explain how you know.
PLEASE HELP GIVING 200 POINTS NEED DONE ASAP

Answers

Well you aren’t giving 200 points, but I’ll help anyway….
So, 7.5miles per hour, is a mile in 8min flat. That being said, when Lin was about 250m away from the line, 8min were already passed. So, Elena would be there first.

Elena was there first

4. Find the surface area of the given triangular prism.
w
3 cm
5 cm
5 cm
5 cm
6 cm
7 cm

Answers

Answer:

3(5) + 3(6) + 3(7) + 2(1/2)(6)(5) =

15 + 18 + 21 + 30 =

84 cm²

Brainliest IF Correct!

Use the graph below to answer the question.

Determine the coordinates of polygon A′B′C′D′ if polygon ABCD is rotated 90° counterclockwise.

A′(0, 0), B′(−2, 5), C′(5, 5), D′(3, 0)
A′(0, 0), B′(−2, −5), C′(−5, 5), D′(−3, 0)
A′(0, 0), B′(−5, −2), C′(5, −5), D′(3, 0)
A′(0, 0), B′(−5, −2), C′(−5, −5), D′(0, 3)

Answers

Answer:

Step-by-step explanation:

Rotating CCW 90 ° will cause this change in coordinates

Answer: Is would be A

Step-by-step explanation: Because since it is 90 degrees counterclockwise you would do the 270 formula since it is counterclockwise and the formula for 270 degrees is basically swapped the x and the y and add a negative to the original y and if it's already a negative it becomes a pthe polygon, so the answer is A (0, 0), B(-2, 5), C(5, 5), D(3, 0) the first one

I hope this helps you with your question and helps you understand for future questions like this

ANSWER QUICK PLS FIRST ANSWER BRAINLIEST
Calculate the size of angle BCD

Answers

Answer: 76

Step-by-step explanation: With the information given, the size of angle BCD is 76

Answer: 76

Step-by-step explanation:

complete each expression to makei ts value equal to 9

Answers

Answer:

a. 6

b. 2

c. 4

Step-by-step explanation:

Hope it helps :)

A = 6

B = 2

C = 4

(24-6)/2=9
3x[(2x5)-7]=9
{[24/(4+4)]-2}x9=9

Please help quick! this is my second to last question!

Answers

Answer:

1.) 17

2.) -6

3.) 6

4.) 14

5.) -13

Step-by-step explanation:

1. 2x8+1= 17

2. 10 - (4x4)= 10-16= -6

3. (10/5) + 4 = 2+4= 6

4. (-6 x 1/3) + 16= -2 + 16= 14

5. (8 x -1) - 5= -8 - 5= -13

1.) 17

2.) -6

3.) 6

4.) 14

5.) -13

This morning, Sam's car had 19.37 gallons of fuel. Now, 1.6 gallons are left. How much fuel did Sam use?

Answers

Answer:17.77

Step-by-step explanation:

have a good day

17.77 would be the correct answer, all you have to do, is subtract 19.37 and 1.6 and WALA!

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