Question

This trapezium is drawn on a centimetre grid.
Find the area of the trapezium.

Answer 1

A = 21 cm²

Explanation:

The area (A) of a trapezium is calculated as

A =
`(1)/(2)` h (b₁ + b₂ )

where h is the height between bases and b₁, b₂ are the parallel bases

Here h = 3, b₁ = 9, b₂ = 5 , then

A =
`(1)/(2)` × 3 × (9 + 5) = 1.5 × 14 = 21 cm²