Question

A rectangular piece of paper 44cm long and 10cm brod is rolled along the length to form a cylinder.What is the radius of base

Answer 1

the radius of cylinder is 7 cm

Answer 2

Length if the rectangular paper, L = 44 cm

Breadth of the rectangular paper, B = 10 cm

It is rolled along the length so length will become the circumference of the circle at the top and the bottom of the cylinder

So, Circumference of the circle = 2·π·r

Where r is the radius

Circumference = 44 cm

2·π·r = 44

2·22/7·r = 44

r = 44*7 / 44

r = 7 cm

base radius = 7 cm