Answer:
SA = 56π cm²
Explanation:
the surface area (SA) is calculated as
SA = area of 2 circular ends + area of curved surface
= 2πr² + 2πrh ( r is the radius and h the height )
here r = 4 and h = 3 , then
SA = 2π × 4² + 2π × 4 × 3
= 2π × 16 + 2π × 12
= 32π + 24π
= 56π cm²