JAMB Mathematics 2007 Question 50

Question 50

Mensuration of Plane Shapes

The area of a square is 144 sq cm. Find the length of the diagonal.

  1. A.13 cm
  2. B.12√2 cm
  3. C.12 cm
  4. D.11√3 cm
Show the answer and explanation

Answer: B (12√2 cm)

Explanation

The side is √144 = 12cm, and the diagonal of a square is side × √2 = 12√2 cm.