Question

We can use the formula r=squareroot s/12.6 to relate a ball's surface area (in square inches) to its radius (in inches). Suppose a ball has a surface area of 390.6 square inches. What is its radius? Round your answer to the nearest tenth.

Answer 1

Answer:

The radius is 5.56 inches.

Explanation:

Given that,

Surface area = 390.6 inch²

We need to calculate the radius

Using given formula

$r =\sqrt{\dfrac{S}{12.6}}$

S = surface area

r = radius

Put the value of S in to the formula

$r =\sqrt{\dfrac{390.6}{12.6}}$

$r =5.56\ inches$

Hence, The radius is 5.56 inches.