Question

If the diameter of a sphere is 4 ft, then what is its surface area? Leave your answers in terms of π.

A. 14π m²
B. 16 m²
C. 16π m²
D. 2π m²

Answer 1

C

Explanation:

The surface area (SA) of a sphere is calculated as

SA = 4πr² ( r is the radius )

Here diameter = 4 , then r = 0.5 × 4 = 2 , then

SA = 4π × 2² = 4π × 4 = 16π ft² → C

Answer 2

16π m²

Explanation:

Screenshot down below that i got it correct on founders education