Question:
Tick (✓) the correct answer:
The parallel sides of a trapezium measure 14 cm and 18 cm and the distance between them is 9 cm. The area of the trapezium is
(a) 96 cm2
(b) 144 cm2
(c) 189 cm2
(d) 207 cm2
Solution:
(b) $144 \mathrm{~cm}^{2}$
Area of the trapezium $=\left\{\frac{1}{2} \times(14+18) \times 9\right\} \mathrm{cm}^{2}$
$=\left(\frac{1}{2} \times 32 \times 9\right) \mathrm{cm}^{2}$
$=144 \mathrm{~cm}^{2}$