Question

5. The diameter and height of a cylindrical plate
are 14 cm and 2 cm respectively. 20 such plates
are stacked up to make a larger cylinder. Find
the volume of this larger cylinder.​

Answer 1

Solution:

=> Diameter = 14 cm

i.e. Radius = 7 cm

=> Height = 2 cm

i.e Height of the cylinder = 2 × 20 = 40 cm

Volume of the cylinder = πr²h

=> Volume of the cylinder = 22/7 × 7² × 40

=> Volume of the cylinder = 6160 cm²