waec model questions vol1 2023 mathematics

Objective • Question 20

Question 20 WAEC_MODEL_QUESTIONS_VOL1 • 2023
In triangle ABC, AB = 13 cm and AC = 15 cm. The median from A meets BC at D. If the area of triangle ABD is 42 cm², find all possible lengths of BC.
Answer Options
A. BC = 16 \text{ cm or } BC = 3\sqrt{50} \text{ cm}
B. BC = 12 \text{ cm or } BC = 6\sqrt{30} \text{ cm}
C. BC = 20 \text{ cm or } BC = 2\sqrt{85} \text{ cm}
Correct Answer D. BC = 14 \text{ cm or } BC = 4\sqrt{37} \text{ cm}
Correct Answer
D
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