i. Given: r = 10.5 cm and h = 8 cm
To find: Volume of the cylinder Volume of the cylinder = πr2h
= \(\cfrac{22}{7}\)x 10.5 x 10.5 x 8
= 22 x 1.5 x 10.5 x 8
= 2772 cc
∴ The volume of the cylinder is 2772 cc.
ii. Given: r = 2.5 m and h = 7 m
To find: Volume of the cylinder Volume of the cylinder = πr2h
= \(\cfrac{22}{7}\)x 2.5 x 2.5 x 7
= 22 x 2.5 x 2.5
= 137.5 cu.m
∴ The volume of the cylinder is 137.5 cu.m.