Question

Need some help with question 20

Answer 1

l = 420 cm

Explanation:

20.

Central angle = 60°

The radius of circle, r = 7 cm

We need to find the length of the arc. We can find it as follows :

`l=r* \theta\\\\l=7* 60\\\\l=420\ cm`

So, the length of the arc is equal to 420 cm.