The major arc associated with ACB can be named ADB. The lengths of AC and BC are both going to be equal to the length of the radius which is 18. Therefore if you divide an arcs degree measure by 360 you find the fraction of the circles circumference that the arc makes up.
The lengths of AC and BC are both going to be equal to the length of the radius which is 18.
Then if you multiply the length all the way around the circle the circles circumference by that fraction you get the length along the arc. A r² th 2 15² p4 2 8836 cm². Therefore if you divide an arcs degree measure by 360 you find the fraction of the circles circumference that the arc makes up. L r th 15 p4 1178 cm.