Question

Find the degree measure of the angle subtended at the centre of radius $100cm$ by an arc of length $22cm$ (Use $\pi =\frac{22}{4}$).

Answer 1

by are length formula $S=r\theta$

$\theta =\frac{s}{r}=\frac{22}{100}=0.22radians.$

$\theta indegress=0.22\times \frac{180}{\pi }=12.605$