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WAEC Mathematics 1999 Question 32

Question 32

Mensuration of Plane Shapes

In the diagram, PQST and QRST are parallelograms. Calculate the area of the trapezium PRST.

Diagram for this question
  1. A.60cm2
  2. B.50cm2
  3. C.40cm2
  4. D.30cm2
Show the answer and explanation

Answer: D (30cm2)

Explanation

PQ = QR = TS = 4 cm, so PR = 8 cm; the height QT is 5 cm. Area = ½(8 + 4) × 5 = 30 cm2.