Question

Find the surface area of the cylinder with a diameter of 12 cm and height of 11 cm, as shown on the diagram below.

Answer 1

640.88 cm

Explanation:

A = 2 * 3.14 *r* h + 2 * 3.14 * r^2
A = 2 * 3.14 * 11 * 6 + 2 * 3,14 * 6^2

A = 414.69 + 226.19 = 640.88 cm

Answer 2

320.6

Explanation:

surface area of cylinder= πr(r+h)

r=d/2=12÷2=6

T.S.A= 22/7×6(6+11)

=22/7×6×17

=2244/7

=320.57

=320.6 to 1dp