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UI Post-UTME Mathematics 2023 (Model questions) Question 20

Question 20

Mensuration of Plane Shapes

Find the area of a triangle with sides of length 6, 8 and 10

  1. A.12 square units
  2. B.24 square units
  3. C.30 square units
  4. D.36 square units
Show the answer and explanation

Answer: B (24 square units)

Explanation

6² + 8² = 10², so it is right-angled with legs 6 and 8: area = ½ × 6 × 8 = 24.