Question

The surface area of a soccer ball is 254.5 in?.
What is the radius to the tenths' place?

Answer 1

4.5 inches

Explanation:

Use the formula for the surface area of a sphere, SA = 4
`\pi`r²

Plug in the surface area and solve for r, the radius:

SA = 4
`\pi`r²

254.5 =
`\pi`r²

20.25 = r²

4.5 = r

So, the radius is approximately 4.5 inches