The diagonal of a quadrilateral is 30m in length and the length of the perpendiculars to it from the opposite vertices are 6.8 m and 9.6m. Find the area of the quadrilateral.

2 Find the area of a rhombus the lengths of whose diagonals are 36cm and 22.5cm. 3 Find the area of a rhombus in which each side is equal to 15cm and one of whose diagonals is 24cm.  4 Find the area of a trapezium whose parallel sides are 57 cm and 39 cm and the distance between them is 28 cm. 5 The area of trapezium is 352 cm². The distance between the parallel sides is 16cm. If one of the parallel sides is 25 cm. Find the other.