Question

What is the surface area of the cylinder with height 5 ft and radius 2 ft? Round your

answer to the nearest thousandth.

Answer 1

87.965

Explanation:

surface area of a cylinder,

2πr²+2πrh (where r = radius, h = height)

given, h = 5, r = 2

so,

2πr²+2πrh

= 2π×2²+2π×2×5

= 8π+20π

= 28π

= 87.9645943..

= 87.965 (rounded to the nearest thousand)