Two parallel sides of a trapezium are of lengths 57 cm and 39 cm. The distance between the parallel sides is 30 cm. Find the area of the trapezium.
1440 cm2
Let 'a' and 'b' be the parallel sides of the trapezium and 'h' be the height of the trapezium
Area of trapezium =12(sum of parallel sides)×height
⇒12(a+b)×h=12(57+39)×30=1440 cm2