WAEC Mathematics 2001 Question 44

Question 44

Circle Theorems

A chord of length 30 cm is 8 cm away from the centre of the circle. What is the radius of the circle?

  1. A.16 cm
  2. B.17 cm
  3. C.18 cm
  4. D.20 cm
Show the answer and explanation

Answer: B (17 cm)

Explanation

r = √(152 + 82) = √289 = 17 cm.