The sides of a rhombus are 5 centimetres Iong and one of its angles is `100^circ`Compute its area.

The equal sides of an isosceles triangle are 8 centimetres long and the radius of its circumcircle is 5 centirnetes. Calculate the length of its third side.

In a right angled triangle, one of the perpendicular sides is 5 centimetres longer than the other and its area is 12 square centimetres. What are the lengths of its sides?

The lengths of two sides of a triangle are 8 cm and 10 cm and the angle between them is 40^circ . Calculate its area. What is the area of the triangle with sides of the same Iength, but angle between them 140^circ ?

One side of a rhombus is 12 cm and one angle is 135^@ :- Find the area of the rhombus.

Find the area of the rhombuś of side 5 centimetres and a diagonal 6 centimetres.

The sides of a square are of length 6.4 centimetres. What is its perimeter?

The sides of a triangle are 4 centimetres, 6 centimetres and 8 centimetres. What is its perimeter? Denoting the length of the sides as a , b , c and perimeter as p how do we write the relation between them?