Curved surface area of a right circular cylinder is 4.4 m². If the radius of the base of the cylinder is 0.7 m, find its height.

Curved surface area of cylinder 4.4 m² and radius r = 0.7 m
Let, the height of cylinder = h m
Curved surface area of cylinder = 2πrh
⇒ 4.4 = 2 × 22/7 × 0.7 × h ⇒ 4.4 = 4.4h ⇒ h = 1 m
Hence, the height of the cylinder is 1 m.