Question

If the lateral surface of a cylinder is 94.2 cm square and is height is 5 cm, find i) radius of the base ii) its volume

Answer 1

Lateral surface area of a cylinder is 2πrh=94.2cm^2.

2×22/7×r×5cm=942/10cm^2.

r=942×7cm^2/2×22×5cm=30cm(approx.).

now volume:-

πr^2h=22/7×30×30×5cm^3.

=14143cm^3.