Question

a circle with circumference 20 has an arc with a 72 degrees central angle. what's the length of the arc

Answer 1

Answer:

4 units.

Step-by-step explanation:

Let's use a ratio

72 : 360

8  :  40

1   :   5

The arc is $\frac{1}{5}$ of the total circumference.

$\frac{1}{5} *20=4$

The arc length is 4