The height and slant height of a cone are 7 cm and 25 cm respectively. Then its radius is

Volume of a hemisphere is

The ratio of two spheres is 1 : 2, then the ratio of their surface areas is

The horizontal cross – section of a cylinder is a

The vertical cross – section of a cylinder is

The vertical cross – section of a cone is

When a cone is opened along its slant height, it gets the shape of a

When a cylinder is opened along its height, it gets the shape of a

Area of an equilateral triangle whose side is 2 cm is

Volume of a pyramid whose base area is 18 $c{m}^{2}cm^2$ and height 8 cm is