WAEC Mathematics 2016 Question 36

Question 36

Mensuration of Plane Shapes

In the diagram, MOPQ is a trapezium with QP//MO, MQ//NP, NQ//OP, |QP| = 9 cm and the height of ΔQNP = 6 cm, calculate the area of the trapezium.

Diagram for this question
  1. A.96 cm2
  2. B.90 cm2
  3. C.81 cm2
  4. D.27 cm2
Show the answer and explanation

Answer: C (81 cm2)

Explanation

MNPQ and NOPQ are parallelograms, so MN = NO = 9 cm and MO = 18 cm. Area = ½(18 + 9) × 6 = 81 cm².