Question

A circle has a radius of 4m . find the length s of the arc intercepted by a central angle of 77° . do not round any intermediate computations, and round your answer to the nearest tenth.

Answer 1

$s= \pi r ( \frac{C}{180} ) \ \ \ \ [C= central \ angle, \ r=radius, \pi =3.14] \\ \\ s=3.14*4* \frac{77}{180}= 3.14* \frac{77}{45} \approx 5.4 \ m$