Question

A solid cylinder has radius 3.5 cm and height 8.2 cm.
Work out the total surface area of the cylinder.
Give your answer correct to 3 significant figures.

Answer 1

Answer:

Given : radius (r) = 3.5

height (h) = 8.2

Total surface area of cylinder =

$2\pi \: r \: ( r + h)$

2 x 3.14 x 3.5 ( 3.5+8.2)

2 x 10.99 x 11.7

2 x 128.59

257.17

hence, total surface area of cylinder is 257.17