Question

Find the length of arc in cm.​

Answer 1

The ratio of the angle to 360 is the ratio of the length of the arc to the entire circle.
The entire circle has a circumference of 2pir, which is 2 * pi * 3/pi = 6. 120/360 is the ratio, which is 1/3. 6*1/3 = 2.

Answer 2

Answer: 1 cm

Explanation:

To find the length of arc, multiply the fraction of the circle to the Circumference

Looks like:

`(part of circle)/(whole circle) (2\pi r)`

r=3/
`\pi`

length =
`(120)/(360) (2\pi)(3)/(\pi )` pi's cancel, now reduce

= 2 cm