Question

The diagram shows a sector of a circle radius 10 cm, 135°. Find the perimeter of the sector

Answer 1

22.4 cm

Explanation:

Given

r = 10 cm

θ = 135°

Perimeter of sector is:

P = 2r + 2πr(θ/360)

P = 2*10 + 2(3.14)(135/360) = 22.4 cm (rounded)