WAEC Mathematics 2009 Question 34

Question 34

Mensuration of Plane Shapes

An arc of a circle subtends an angle of 60° at the centre. If the radius of the circle is 3 cm, find, in terms of π, the length of the arc.

  1. A.π cm
  2. B.2π cm
  3. C.3π cm
  4. D.6π cm
Show the answer and explanation

Answer: A (π cm)

Explanation

Arc = 60/360 × 2π × 3 = π cm.