Question

The exact circumference of a circle is 15.6π inches. What is the approximate area of the circle? Use 3.14 for π . Round to the nearest hundredth if necessary. Explain how you found your answer.

Answer 1

r = 3.95

Explanation:

A =
`\pi {r}^(2)`

3.14r² = 15.6 (3.14)

Divide by 3.14

r² = 15.6

r =
`√(15.6)`

r ≈ 3.95