Question

The curved surface area of a right circular cylinder of height 14 cm is 88 cm². Find the diameter of the base of the cylinder.

Answer 1

Here, h = 14 cm, curved, surface area = 88 cm², r = ? 

Curved surface area of the cylinder = 2πrh 

⇒ 88 = 2 × 22/ 7 × r × 14 

⇒ 88 = 44 × 2 × r 

⇒ r = 88/ 44 × 2 = 1 

Hence, base diameter of the cylinder = 1 × 2cm = 2 cm Ans