Question

The distance between two parallel sides of a trapezium of area $441sq.cm$ is $18cm$. If one of the sides is $28cm$, find the other side.

Answer 1

Distance between parallel sides = height of trapezium

Area of trapezium = $\frac{1}{2}$ (sum of parallel sides) $\times$ height

$441=\frac{1}{2}(x+28)\times 18$

$\Rightarrow x+28=49\Rightarrow x=21cm$