If length of three sides of a trapezium other than base are equal to 10cm. Then find the area of the trapezium when it is maximum.

When the sides of a square are increased by 4,area become 256.Find the length of the first square

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

Length of two sides of a triangle are 20 cm and 16 cm and the angle between them is 135^@ :-Find the area of the triangle.

One of the perpendicular side of a right angled triangle has length 4 cm more than twice of the other side.It has surface area , 80cm^2 .Find out the lengths of the perpendicular sides.

If the two sides of a right angled triangle other than the hypotenuse are 12 cm and 10 cm: Find the altitude to the hypotenuse.

Suppose that each side of the square in the picture has length 12 cm . What is the area of the shaded part?

Hypotenuse of an isosceles triangle is 10cm. Find other two sides of the triangle

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 ?

Two equal sides of an isosceles triangle with fixed base 'a' are decreasing at the rate of 9cm/s How fast is the area of the triangle decreasing when the two sides are equal to 'a'.