The grid contains a circle with a diameter of 2 centimeters. Use the grid to estimate the area of the circle to the nearest whole square centimeter.
A circle graphed on a 4-by-4 grid. The circle has a diameter of 4 units.
area: about ?? cm²
How can you change the grid to improve your estimate? Explain.
Answers
The area of the circle is the amount of space on the circle
The area of the circle is about 14 cm²
How to estimate the area of the circle?From the question, we understand that the circle fits perfectly into the grid.
This means that the area of the circle is about the same with the area of the square grid.
The area of the square grid is:
Area = 4 * 4
Evaluate
Area = 16
The surrounding areas are triangles with the following estimated dimensions:
Base = 1.5, Height = 1.5
The area of the four triangles is:
Area = 4 * 0.5 * 1.5 * 1.5
This gives
Area = 4.5
Subtract the area of the triangle from the square
Remaining area = 16 - 4.5
Remaining area = 11.5
Approximate
Remaining area = 12
Hence, the area of the circle is about 12 cm²
How to improve the grid?To improve the grid, we simply get the actual dimension of the black region
Read more about area at:
https://brainly.com/question/24487155
Related Questions
Determine the area of the shaded region. Use 3 for pi.
Answers
hey can someone help me
Answers
Answer:
I think its 345.6m^3
Step-by-step explanation:
Volume=Base x Height
Volume=(4.8 x 7.2) x 10
Volume=34.56 x 10
Volume is 345.6 m^3
Answer:
v= b x h 4.8 x 10 = 32.3
Step-by-step explanation:
Find the area of each circle with the given radius or diameter. Use 3.14 for pi.
Answers
Answer:
Read explanation
Step-by-step explanation:
r=4in 4^2 is 16 then multiply it by 3.14 to get 50.24
r=2in 2^2 is 4 then multiply it by 3.14 to get 12.56
d=2in Since you have the diameter first, you just divide it by 2 and your radius is 1. 1^2 is 1 1*3.14=3.14
r=8in 8^2 is 64 then multiply it by 3.14 to get 200.96
d=12in divided 12 by 2 and you get 6. 6^2 is 36, multiply that by 3.14 to get 113.04
Christy subtracted to find her jogging rate for each time period and said that her rate
increased each hour, from 8 to 12 to 16 miles per hour, is Christy correct? Explain why or
why not
Answers
Answer:
No, Christy subtracted to find her jogging rate. Not added.
Step-by-step explanation:
The common diffrnece is +4 so she whould have to add. I hope this helps
GUYS I NEED HELP PLS HELP ME!! ,>v<,
Answers
Answer:
31.6
i think
Because 39 1/2 divided by 1 1/4 is 31.6
Hope This Helps
Answer:
31.6
Step-by-step explanation:
Alright lets take a deep look at the question. It is asking for the miles/gallon, or miles per gallon so we already have our format set. Now for the important information, how do we find unit rate?
Simply put, we divide the unit numerator by the quantity in the denominator. Alright, so we have 39.5/1.25 already, which gives us a highway to our answer through dividing the numbers as they are shown.
Therefore, our unit rate is 31.6 miles per every gallon of fuel.
Hope this was helpful!
The dot plot shows the number of fish that are in each fish bowl at a certain pet store. A dot plot whose number line is labeled Number of fish. There are 2 dots above 1, 3 dots above 2, 2 dots above 3, 4 dots above 4, 2 dots above 5, 5 dots above 6, 1 dot above 7, and 1 dot above 9. How many fish bowls are at the pet store? Enter your answer in the box.
Answers
Answer:
37
Step-by-step explanation:
A national survey of middle school students asks how many hours of sleep they get on school nights. Which sample best represents the population?
a.) A group of 941 students in eighth grade in a certain town
b.) A group of 886 students in sixth grade in a certain county
c.) A group of 795 students in seventh grade in different states
d.) A group of 739 students in different middle school grade levels from various states
Answers
Answer:
D
Step-by-step explanation:
It wouldnt be a single grade being surveyed so we would choose d in additon a and b isnt national since it says 'in a certain town' and 'in a certain county'.
Which leaves you with D.
PLS help MEEEEEEEEEEEE
Answers
(-y+5)+(7y-9)=
-y+5+7y-9=
-y+7y+5-9=
-y+7y-4=
6y-4.
Now we have (ny-4)=>n=6
i like a girl how do i tell her ?
Answers
Answer:
Step-by-step explanation:
Just truely be open about your feelings, don't try and sugarcoat it, or leave things out, just be honest with her and tell her straight up, politely of course.
Answer:
if you've known her for a while go for it, but if she's like a hallway crush, you should get to know her first
Step-by-step explanation:
whats 60 x 60 - 100 -10 please help
Answers
Answer:
3490
Step-by-step explanation:
You first multiply 60 by 60 you will get 3600 then you minus 3600 by 100 you will get 3500 then you minus 3500 by 10 you will get 3490 that how you get you answer
your welcome
Determine whether the given equation has one solution, no solution, or infinitely many solutions. 2/3 x = 9-2 (-1/3 x + 3)
one solution cannot be determined
infinitely many solutions
no solution
Answers
Answer:
no solution
thats the answer :)
<3
-maddie
If each square that is broken into 100 parts is considered a whole, which model represents 0.68 of 2? 2 models divided into 100 parts. Left: 68 are shaded gray. Right: 68 are shaded gray. 2 models divided into 100 parts. Left: 70 are shaded dark gray. 30 are shaded light gray. Right: 0 are shaded dark gray. 40 are shaded light gray. 2 models divided into 100 parts. Left: 60 are shaded dark gray. 40 are shaded light gray. Right: 20 are shaded dark gray. 20 are shaded light gray. 2 models divided into 100 parts. Left: 100 are shaded gray. Right: 100 are shaded gray.
Answers
2 models divided into 100 parts. Left: 68 are shaded gray. Right: 68 are shaded gray.
=====================================================
Explanation:
Consider the problem of 0.68 of 1, in other words 0.68*1 or simply 0.68
The number 0.68 is 68/100 or 68 over 100. We can have a 10 by 10 grid of tiny squares. Shade in 68 of them to represent 0.68 aka 68 hundredths.
So you'd have 6 full rows shaded (to account for 0.60 so far) and then an additional 8 squares in the seventh row (adding on 0.08 to get 0.60+0.08 = 0.68)
All of this is for one square. Double this process and you'd get 0.68*2 to represent the value 1.36
In total, 2*68 = 136 squares are shaded out of 2*100 = 200 squares total.
An icecream stand sells chocolate, vanilla and strawberry ice cream as well as a choice of 22 toppings. how many choices are there for a single flavor of ice cream with one topping?
Answers
66
Explanation;
22x3(flavors)=66
PLEASE HELP ME NOW!!!!!!!!!!
Answers
Answer:
Step-by-step explanation:
Sorry for the handwriting, but hope u can understand it :)
Lidia keeps eight cards with the picture of a tomato and four cards with the picture of a carrot on a table face down, so the pictures are hidden. She mixes up the cards then turns over one card and finds the picture of a carrot on it. She removes this card from the table and turns over another card.
What is the probability that the card Lidia turns over has a carrot on it?
A. 3/12
B. 3/11
C. 7/12
D. 7/11
I need help
Answers
Answer:
B
Step-by-step explanation:
Add the number of the remaining cards
8 cards of tomatoes + 3 remaining cards of carrots
since Lidia turned the cards and put away 1 carrot card.
At first she had 4 on the table but now she has 3
So, add 8+3= 11
The question is asking... what is the probability that the card Lydia turns over has a carrot on it.
so we put the number of remaining carrot cards over the total number of cards.
3/11
✌
HELP!!!
Which line segments are intersecting?
Answers
Answer: D
Step-by-step explanation:
The two lines are touching.
Answer: D
Step-by-step explanation: The lines are intersecting in D because they are going through each other or crossing eachother.
A computer is used to generate passwords made up of numbers 0 through 9 and lowercase letters. The computer generates 400 passwords one character at a time.
A uniform probability model is used to predict the first character in the password.
What is the prediction for the number of passwords in which the first character is a vowel?
Round your answer to the nearest whole number.
56 passwords
77 passwords
111 passwords
233 passwords
who ever answer first will get brainiest
Answers
Answer:
56
Step-by-step explanation:
i took the test
Find x in the diagram below.
Answers
Answer:
20°
Step-by-step explanation:
1) Opposite angles are equal, so the opposite will be 140°.
2) Then, you do 140+110+90+90 (since A and D are at right angles) which gets you 430°
3) Finally, since its a pentagon, you do 540° - 430° which is 110°
Answer:
x=110
Step-by-step explanation:
help with this as well
Answers
Answer:
10.53 m
Step-by-step explanation:
since the two triangles that are formed are similar triangles, you can find out that by how much the base of the small triangle is getting larger in the bigger triangle by dividing the two measurements. after finding out that the scale factor is 9.16, i multiplied the height of the person by 9.16 to figure out the height of the school building since they are similar
hope u get it:)
What is 27.78% of 1728? (I need this fast!)
Answers
Answer: Image will give answer
Step-by-step explanation: Look at image for answer
Answer:
480.0384
Step-by-step explanation:
to solve for the percentage you can start with this equation... [tex]\frac{27.78 * 1728}{100}[/tex]
which can be further simplified to [tex]\frac{48003.84}{100}[/tex]
which means the answer will be [tex]\frac{480.0384}{1}[/tex]
The library labels each book with a five-digit code to identify the book in their computer system. Each code is 3 digits (0-9) followed by two letters. How many codes are possible?
Answers
Answer:The number of all possible codes = 26 * 26 * 10 * 10 * 10 = 676000
Step-by-step explanation:
five digit code; each code is 3 digits (0-9) followed by two letters. That's ten numbers to choose from and 26 letters in the alphabet.
The problem suggests numbers and letters can be used more than once, like having a code: 555AA
To find the number of possible codes, you multiply by the choices for each digit.
10*10*10*26*26 = 676,000
Answer:
26 * 26 * 10 * 10 * 10 = 676000
Step-by-step explanation:
Mr. Dion is the band director at school. He asks students
to record how long they have played an instrument. The
dot plot shows the data he has recorded.
Length of Time Students Played
an Instrument
2 3
5
Number of years
What unit of measure is used in the study?
A. Number of observations
B. Number of instruments
C. Years
D. Number of students
Answers
Not
Sue tho so don’t take my word on it but I think it’s B
It costs $3.56 to buy a pack of pencils. Which of the following equations shows the amount of money needed, x, to buy k packs of pencils?
x = 3.56k
k = 3.56x
x = 3.56 + k
k = 3.56 + x
Answers
Find each value. (1.2) to the power of 3, (1/4) to the power of 4, (2) to the power of 6, 2 to the power of 6.
Answers
Answer:
1.728
Step-by-step explanation:
1.2^3 = 12^3/10^3
12^3/10^3 = 1728/1000
1728/1000 = 1.728
1/4 to the power of 4 = 1/256
2 to the power of 6= 64
Help! 7th grade math question!
Answers
Answer:
The scale factor was x3
Step-by-step explanation:
3 x 3 = 9. 5 x 3 = 15. So the scale factor is times 3 or x3.
Answer:
The scale factor is 3
Step-by-step explanation:
this is because if you divide the length or the width of rectagle B by 3, it will give you the length or width of rectangle A
Hope this helps!
A trapezoid’s longer base is three times the length of its shorter base. If the trapezoid has an area of 32 square feet and a height of 4 feet, what is the length of each base?
Answers
Answer:
longer base: 10 2/3
shorter base: 5 1/3
Step-by-step explanation:
you first take 32 divided by 4 and then multiply that by 2 and you get 16 and then you divide that by 3 and you get 5 1/3 but then the longer one is 5 1/3 plus 5 1/3 (i hope that makes sense)
Which statement is true based on the diagram?
Answers
Answer:
option B
Step-by-step explanation:
Triangle RST~ TRIANGLE RQP
Complete the square for: 3[tex]x^2[/tex]-18x-12
Answers
Answer:
[tex]3(x-3)^{2} - 15[/tex]
WILL GIVE BRAINLIEST find the vertex of the parabola y=x^2+8
Answers
Answer: (0, 8)
Step-by-step explanation:
Vertex form: 4 · 1/4 (y - 8) = (x - 0)²
(h , k) = (0, 8)
Simplify the following expression: (7x - 9y) + (2x - 7) - (-x + 5)
Answers
Answer:
10x−9y−12
Step-by-step explanation: