Question

The area of a circle is 361 cm?.

What is the radius of this circle?
Your final line should be written as r= ...​

Answer 1

Answer: 114.9

Explanation:

`\pi`.
`r^(2)` = A

`\pi`.
`r^(2)` = 361

r =
`\sqrt (A)/(\pi )`

r =
`\sqrt (361)/(\pi ) = 114.9`