The parallel sides of a trapezium are 9 cm and 7 cm and its area is 80 `cm^(2)`.Find its altitude.

If the lengths of the two parallel sides of a trapezium are 8 cm and 10 cm. and its area is 54 cm^(2) . Find the distance between its parallel sides (in cm.).

If the lengths of the two parallel sides of a trapezium are 4 cm and 6 cm. and its area is 25 cm^(2) . Find the distance between its parallel sides (in cm.).

The lengths of the parallel sides of a trapezium are 19 cm and 13 cm and its area is 128 cm^(2) . The distance between the parallel sides is

The length of the parallel sides of a trapezium is 12 cm and 8 cm. Its area is 100 cm^(2) . Find the distance between the parallel sides.

The length of two parallel sides of a trapezium are 30 cm and 50 cm and its height is 16 cm. Its area is :