Question

The capacity of a hemispherical tank is 155.2321 . Find its radius.

Answer 1

Given : Hemispherical tank capacity - 155.2321

To Find : Radius

Solution : Let r be the radius of the hemisphere.

Now, Volume of hemisphere = 19404 cm³

= 2/3πr3= 19404

                = 2/3×22/7×r³= 19404

            = 44r³= 19404 × 21

                   = r³ = 441×21

⇒ r = 21 cm

Ans - So , the radius is 21 cm