If radius of a circle is 14 cm then find its area.
The diagonals of a rhombus are 18 cm and 10 cm. Find its area.
The perimeter of a rhombus is 20 cm & its height is 3.5 cm. Find its area.
The perimeter of a rhombus is 164 cm and one of its diagonals is 80 cm. Find its area.
The surface area of a sphere of radius 4 cm is