Question

A rectangular sheet of paper, 44 cm×20 cm, is rolled along its length of form a cylinder. Find the volume of the cylinder so formed.

Answer 1

Given,length of the rect.=44cm

Breath of the rect.=20cm

Now since it has been rolled along its length,therefore

h of the cylinder =20cm

Circumference=>44=2πr

=>22= 22/7 * r

=> r =7 cm

According to the question,

Vol of the cylinder= πr^2h

= 22/7 * 7 * 7 * 20

=3080cm^3

Answer 2

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