How do you find the lengths of the arc on a circle of radius 15 inches intercepted by the central angle 180^circ?

1 Answer
Sep 26, 2017

47.14 inches
or
15 pi "inches"

Explanation:

"angle"=180^@=180^@xxpi/180^@=pi
"radius"=15 "inches"

Relation between arc and radius and angle
"angle"="arc"/"radius"
"arc"="angle"xx"radius"=pixx15=15pi"inches"
"arc"=15xx22/7=47.14 "inches"