All categories

3 years ago

A circular picture is 8 inches in diameter what is the area of the picture in square inches

Mathematics

2 answers:

barxatty [35]3 years ago

6 0

area = PI x r^2

radius = 1/2 diameter

1/2 of 8 = 4

3.14 x 4^2 = 3.14 x 16 = 50.24 square inches ( answer may vary depending on what you use for PI. 3.14 is common)

Lemur [1.5K]3 years ago

3 0

The formula for the area of a circle is:
A=3.14r^2
To find the radius you divide the diameter by 2 so:
8/2=4
Then plug in 4 for the radius and solve.
A=3.14x4^2
A=3.14x16
A= 50.24
So the answer is 50.24 square inches

You might be interested in

10 POINTS!!!!! Which of the following statements is true about 63 and 20?

uysha [10]

The answer is: A) They are relatively prime. This is because both of them aren't divisible by any other number than 1. (or 0 if you really want to do that)

4 0

3 years ago

Read 2 more answers

How do you write 0 .25 in a fraction?

tatuchka [14]

0.25 in a fraction would be 1/4

4 0

3 years ago

Read 2 more answers

One alloy is 2 parts iron to 3 parts silver and another alloy is 7 parts iron to 3 parts silver. How much of each should be comb

Shalnov [3]

Let x be your first alloy
2/5x+7/10(30-x)=1/2(30)
4x+210-7x=150
3x=60
x=20
So, you need 20 lbs of the first alloy, and 10 parts of the second to make 30 lbs of half iron and half silver alloy!

8 0

3 years ago

10 percent increase of $29000 over 5 years,will give brainly is urgent

Tema [17]

Answer:

$43,500

Step-by-step explanation:

10 percent increase of $29,000

10% = 0.10

29,000*0.10 = 2,900

So 2,900 a year

so 2,900*5 = 14,500

Then add

29,000+14,500 = 43,500

8 0

3 years ago

there are 148 juniors and 272 seniors attending prom this year. if there must be three chaperones per 60 students, how many chap

valkas [14]

21 chaperones are needed for 420 students.

Step-by-step explanation:

No. of juniors = 148

No. of seniors = 272

Total = 148+272 = 420 students

3 chaperones = 60 students

1 chaperone = $\frac{60}{3}=20\ students$

Ratio of chaperon to students = 1:20

Let,

x be the number of chaperons for 420 students.

Ration of chaperones to students = x:420

Using proportion

Ratio of chaperones to students :: Ratio of chaperons to students

$1:20::x:420$

Product of mean = Product of extreme

$20*x=420*1\\20x=420\\$

Dividing both sides by 20

$\frac{20x}{20}=\frac{420}{20}\\x=21$

21 chaperones are needed for 420 students.

Keywords: ratio, proportion

Learn more about ratios at:

#LearnwithBrainly

3 0

3 years ago