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