Question

The area of a circle is 113.04 in. 2. What is the radius of the circle?

36 inches
18 inches
12 inches
6 inches

Answer 1

\[Area = \pi r^2\]
Typically, people use the value of pi as 3.14 and we now the area is 113.04in^2.
\[113.04inches^2 = 3.14r^2\]

Answer 2

Now you need to divide both sides by 3.14 to isolate r and to find the radius.
\[\frac{ 113.04inches^2 }{ 3.14 } = \frac{ 3.14r^2 }{ 3.14 } => 36 = r^2\]

Answer 3

a

Answer 4

Not really

Answer 5

Since r is squared, that means that we need to find the square root of 36.

Answer 6

\[\sqrt36 = r\]

Answer 7

Did you get your answer?

Answer 8

d

Answer 9

Yes :)