Question

if the lateral surface of a cylinder of height 5cm is 94.2 cm×cm, then find the radius of the base

Answer 1

Lateral surface area of a cylinder = 2×22/7×r×h
94.2=2×22/7×r×5 (because r=5cm)
94.2×7/2×22 = 5r
7253.4=5r
r=7253.4/5=1450.68cm×cm

Hope it Help you

Answer 2

Lateral surface Area = 2*pie*r*h
94.2 = 2*3.14*5*r
94.2 = 31.4*r
94.2/31.4 = r
3cm = r