Jambmaths question:
A trapezium has two parallel sides of length 5cm and 9cm. If the area is 21cm2. Find the distance between the parallel sides.
Option A:
3cm
Option B:
4cm
Option C:
6cm
Option D:
7cm
Jamb Maths Solution:
$\begin{align} & A=21c{{m}^{2}} \\ & Area=\tfrac{1}{2}(a+b)h \\ & 21c{{m}^{2}}=\tfrac{1}{2}(9+5)h \\ & 21=7h \\ & h=3cm \end{align}$
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