If the area of trapezium of height is 12cm is 108 cm then find the sum of the parallel sides of the trapezium

Question

If the area of trapezium of height 12cm is 108 cm then find the area of the trapezium

Answer 1

Let a and b be the lengths of the parallel sides.  The formula for the area of a trapezium is:

 

A = h·(a+b)/2

 

Solving for a+b:

 

2A/h = (a+b)

 

Plug in the values for A (108) and h (12) and you have your answer.