A rectangular paper of width 21 cm is rolled along its width and a cylinder of radius 30 cm
is formed. Find the volume of the cylinder. Justify your answer.
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A rectangular paper of width 21 cm is rolled along its width to form a cylinder.
Height of cylinder = h= 30 cm= width of rectangular paper.
And
Radius of cylinder = 30 cm
Volume of cylinder = πr^2h
= 22/7 × 30×30 21
= 22 × 30 × 30 × 3
= 22 × 900 × 3
= 22 × 2700
= 59400 cm^3
Hence , volume of cylinder is 59400 cm^3
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