1.

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

Answer»

Given,

Dimensions of rectangular sheet = 44 cm × 20 cm

When it rolled along its length:

Radius of base = \(\frac{length}{2π}\) = \(\frac{44\times 7}{2\times 22}\) = 7 cm

Height of cylinder = 20 cm

∴ Volume of cylinder = πr2h = \(\frac{22}{7}\)x 7 x 7 x 20 = 3080 cm3



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