Question

determine The length of the circular arc of a circle with a radius of 49 cm subtended by a central angle of 135°

Answer 1

Given:

Length of the circular arc with circle radius=49cm

θ=135°

Now,

Length of arc = θ/360°×2πr

49=2× 22/7×r×135°/360°

49×20×7/3×22×2

51.96cm