Question

Find the volume of cylinder of whose circumference is 88 cm and height is 10 cm

Answer 1

Answer:

Circumference = 88 cm

Height = 10 cm

r = ?

Circumference = 2πr

Therefore, 2 x 22/7 x r = 88

22/7 x r = 88/2

22/7 x r = 44

22 x r = 44 x 7

22 x r = 308

r = 308/22

r = 14 cm

Now, Volume of the Cylinder = πr²h

22/7 x 14 x 14 x 10

22 x 2 x 14 x 10

44 x 14 x 10

140 x 44

Volume = 6160 cm³

Answer 2

Circumference = 2πr

88 cm = 2πr

r = 88/2π

r = 44/π

Volume = πr²h

             = π × 44/π × 44/π × 10

             = 44 × 44/π × 10

             = (44 × 44 × 10 × 7) / 22

             = 6160 cm³