Question

Find the surface area of the cylinder. Round your answer to the nearest tenth.

Answer 1

Given:

Height of cylinder = 12 cm

Diameter of cylinder = 6 cm

To find:

Surface area of the cylinder

Solution:

Radius = 6 ÷ 2 = 3 cm

Surface area formula:

$SA=2\pi r^2+2 \pi rh$

Substitute the given values.

$SA=2\times3.14 \times3^2+2\times3.14 \times3 \times12$

     $=56.52+226.08$

     = 286.2 cm²

The surface area of the cylinder is 286.2 cm².