Answer:

Step-by-step explanation:
The length of the arc is proportional to the degree measure it in encompasses. Since there are 360 degrees in a circle and the arc is 120 degrees, the arc's length will be  of the circle's length (circumference).
 of the circle's length (circumference).
The circumference of a circle is given by  , where
, where  is the radius of the circle. Therefore, the circumference of the circle is
 is the radius of the circle. Therefore, the circumference of the circle is  . As we found earlier, the length of the arc is
. As we found earlier, the length of the arc is  of this circumference. Therefore, the arc's length is
 of this circumference. Therefore, the arc's length is  .
.
To the nearest integer, this is  .
.