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WAEC Mathematics 2010 Question 28

Question 28

Quadratic Equations

What is the length of a rectangular garden whose perimeter is 32 cm and area 39 cm2?

  1. A.25 cm
  2. B.18 cm
  3. C.13 cm
  4. D.9 cm
Show the answer and explanation

Answer: C (13 cm)

Explanation

l + b = 16 and lb = 39. The numbers are 13 and 3, so the length is 13 cm.