a rectangular paper of length 20 cm and width 14 cm is revolved along its width and a cylinder is formed .find the volume of the cylinder .

Given: Length of rectangular paper = 20 cm

Width of rectangular paper = 14 cm

Let radius of the cylinder = r cm

Now, when a rectangular paper is revolved along its width, then its

Width = Circumference of the base of the cylinder 

and 

length of rectangular paper = Height of the cylinder(h)= 20cm

 

 

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