Question

The surface area, A, of a cylinder is given by the formula A = 2 Trh + 2nr, where ris the radius and h is the height

of the cylinder
What is the surface area of a cylinder with a height of 5 and a radius of 2?
anel
A. 287
4.
B. 3511
C. 4211
12
D. 701
20
E 7511
24

Answer 1

Area = 87.9646 sq. units from A = 28*π sq. units.

However I cannot see this in your answer list, since the numbers look all jumbled. Choice A. looks close to it, since there is a 28...

Explanation:

We have a cylinder with height h = 5

radius = 2

We want the surface area of this cylinder.

A = (circumference)*h + 2*(pi)*r^2

A = ( 4*π)*5 + 2*π*(2^2)

A = 20π + 8π = 28 π square units

A = 87.9646 sq.. units