Question

a rectangular sheet of paper is rolled along its length to make a cylinder the rectangular sheet is 33cm long and 32cm wude a circular sheet of paper is attached to the bottom of the cylinder 56cm high find its volume

Answer 1

Since, it is rolled along its length, the height of the cylinder thus formed= width of sheet= 32cm. Find the radius of cylinder by equating the area of sheet to the curved surface area of cylinder. Once you get the height and radius of cylinder, the capacity can be found easily.

Answer 2

When paper is rolled to make a cylinder

Length Becomes Circumference

•2πr=33cm

33=2×22/7×r

33×7/2×22=r

=21/4

v=2πrh

=2×22/7×21/4×32

= 44×24

= 2722

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