The difference between two parallel sides of a trapezium is 4 cm. The perpendicular distance between them is 19 cm. If the area of the trapezium is 475 sq.cm, find the lengths of the parallel sides:

 a) 20 cm and 16 cm
 b) 27 cm and 23 cm
 c) 24 cm and 20 cm
 d) 25 cm and 21 cm

TNPSC Jailor-2016

27 cm and 23 cm. Solution Let the length of longer side be xcm be and the shorter side be (x-4)