The perimeter of a rhombus is 100 cm, if one of its diagonals is 14 cm. Then the area of the rhombus is 

The length of one side of a rhombus is 6.5 cm and its altitude is 10 cm. If the length of its diagonal be 26 cm, the length of the other diagonal will be : 

The area of a rhombus is 216 cm² and the length of its one diagonal is 24 cm . The perimeter ( in cm ) of the rhombus is 

ABCD is parallelogram. P and Q are the mid points of sides BC and CD respectively. If the area of ∆ABC is 12 cm² then the area of ∆APQ is 

The measure of each of two opposite angles of a rhombus is 60° and the measure of one of its sides is 10 cm. The length of its smaller diagonal is: 

If the length and breadth of a rectangle are increased by 8 % and 12 % respectively, then by what percent does the area of that rectangle increase? 

If the circumference of a circle increases from 4π to 8π, what change occurs in its area?

If the area of a triangle is 1176 cm² and the ratio of base corresponding altitude is 3 : 4, then the altitude of the triangle is :