Question

find the surface area (in square inches) of a ball with radius of 2.6 inches. (round your answer to one decimal place.)

Answer 1

SA ≈ 84.9 inches²

Explanation:

the surface area (SA) of a ball, that is a sphere is calculated as

SA = 4πr² ( r is the radius )

given r = 2.6 , then

SA = 4π × 2.6² = 4π × 6.76 = 27,04π ≈ 84.9 inches² ( to 1 decimal place )