Two parallel sides of a trapezium are 29 cm and 21 cm. Non-parallel sides are equal and each is of length 8.5 cm. What is the area of the trapezium?

X, Y and Z are three equilateral triangles. The sum of the areas of X and Y is equal to the area of Z. If the side lengths of X and Y are 6 cm and 8 cm respectively, then what is the side length of Z?

If all the sides of a parallelogram are equal and one angle is a right angle, then it is called as

A triangle has side lengths x cm, x + 31 cm and x + 26 cm. If its area is 126 square cm, then what is the value of x ?

A triangle has sides 13 cm, 14 cm and 15 cm long. What is the length of the smallest altitude of the triangle?

The sides of a triangle are 5 cm, 12 cm and 13 cm. then its area is