Question

Geometry: Find the length of the arc
Can someone pls help me with this??

Answer 1

the length of arc:

`\tt =(\alpha )/(360)* 2\pi.r`

5.

`\tt (90)/(360)* 2\pi6= 3\pi~yd`

7.

`\tt (135)/(360)* 2\pi.8=6\pi~km`

Answer 2

3π, 6π

Explanation:

12π*1/4=3π

16π*135/360=6π