Question

Find the surface area in terms of pl.

3cm
4 cm

A. 12π
B. 16.5π
C. 4.5π
D. 22π​

Answer 1

(B) 16.5π

Step-by-step explanation:

The shape given is a cylinder

The height, h of the cylinder = 4cm

Diameter of the cylinder = 3cm

Radius, r = 1.5 cm

Surface area of cylinder, A = ?

We know:

Surface area of cylinder = 2πrh + 2πr²

`A = 2\pi r (h+r)\\\\A = 2 X \pi X 1.5 ( 4 + 1.5)\\\\A = 16.5\pi`

Therefore, the surface area would be 16.5π