Volume of a hemisphere is `18000 pi cm^3`. Find its diameter.

The volume of a sphere is 36 pi cm^(3) . Find the surface area of the sphere.

Volume of a cube is 1000 cm^3 . Find its side.

Volume of a cone is 6280 cubic cm. Find its perpendicular height if its radius is 20 cm.

Volume of a cuboid is 300 cm^3 . Find its length if its breadth is 6 cm and height is 5 cm.

A cylindrical tub of radius 5 cm and length 9.8 cm is full of water. A solid in the form of right circular cone mounted on a hemisphere is immersed into the tub. The radius of the hemisphere is 3.5 cm and height of cone outside the hemisphere is 5 cm. Find the volume of water left in the tub. ("Take "pi=22/7)

The volume of a hemisphere is four times that of a sphere. Find the ratio of the radius of the hemisphere to that of the sphere.