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JAMB Mathematics 1990 Question 23

Question 23

Quadratic Equations

The perimeter of a rectangular lawn is 24m. If the area of the lawn is 35m3, how wide is the lawn?

  1. A.5m
  2. B.7m
  3. C.12m
  4. D.14m
Show the answer and explanation

Answer: A (5m)

Explanation

Length + width = 12 and length × width = 35, so the sides are 7m and 5m. The width is the shorter side, 5m.