Question

A 5100sq.cm trapezium has the perpendicular distance between the two parallel sides 60cm if one of the parallel sides be 40cm then the lenght of the other parallel side is

Answer 1

ar of trap=1/2(side1+ side 2)*h
1/2(x+40)*60=5100
x+40=5100*2/60
x=170-40=130