Question

Find the arc length of the partial circle.

Answer 1

38.485(correct to 5 significant figure)/ 12.25π

Explanation:

`\pi(7 {}^(2) )( (90degree)/(360deree) )`

`= \pi(49)( (1)/(4) )`

=38.485(cor. to 5 sig.fig.)/ 12.25π

to find arc length of sector,we need to π(radius²)(sector's degree divided by 360 degree)