Question

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



please give answer​

Answer 1

Answer:

3080 cubic cm

Step-by-step explanation:

C.S.A. of the cylinder = 44×20 sq. cm

Height of the cylinder = Breadth of the sheet (as the sheet is rolled along its length) = 20 cm

2 × 22/7 × r × 20 = 44 × 20

r = 7 cm

Volume of a cylinder = 22/7 × 7 × 7 × 20 cubic cm = 3080 cubic cm

Answer 2

Answer:- 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=2r =>22= 22/7 *r =>r =7 cm According to the question, Vol of the cylinder= r^2h

= 22/7 * 7 * 7 * 20

=3080cm^3 %3D