1.

Find the volume of the cylinder if the circumference of the base of cylinder is 132 cm and height is 25 cm.

Answer»

Given: Circumference of the base of cylinder = 132 cm and height (h) = 25 cm 

To find: Volume of the cylinder 

i. Circumference of base of cylinder = 2πr

∴ 132 = 2 x (22/7) x r

∴ (132 x 7/2 x 22) = r

(6 x 7)/2 = r

∴ 3 x 7 = r 

∴ r = 21 cm 

ii. Volume of the cylinder = πr2

= (22/7) x 21 x 21 x 25 = 22 x 3 x 21 x 25 

= 34650 cc 

∴ The volume of the cylinder is 34650 cc.



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