Question

In a circle of radius 6 cm, a chord of length 10 cm makes an angle of 110° at the centre of the circle. Find the circumference of the circle.

Answer 1

Given: Circle with radius r = 6 cm.

Step-wise calculation:

Formula for circumference: C = 2πr.

Substitute r = 6 cm: C = 2π × 6 = 12π cm.

Decimal: 12π ≈ 37.70 cm to two decimal places.

Circumference = 12π cm ≈ 37.70 cm.