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WAEC Mathematics 2022 Question 25

Question 25

Mensuration of Plane Shapes

In the diagram, ∠WZY and ∠WYX are right angles. Find the perimeter of WXYZ.

Diagram for this question
  1. A.30cm
  2. B.32cm
  3. C.35cm
  4. D.37cm
Show the answer and explanation

Answer: B (32cm)

Explanation

WY = √(42 + 32) = 5 cm and WX = √(52 + 122) = 13 cm. Perimeter = 4 + 3 + 12 + 13 = 32 cm.