Question

The sum of the parallel sides of a trapezium is 25 cm and its area is 150 cm. Find its altitude.​

Answer 1

12 cm

Explanation:

The area (A) of a trapezium is calculated as

A =
`(1)/(2)` h ( sum of parallel bases ) ← h is the altitude

Here A = 150 and sum of parallel bases = 25, thus

`(1)/(2)` h × 25 = 150 ( multiply both sides by 2 to clear the fraction )

25h = 300 ( divide both sides by 25 )

h = 12