A sector of a circle is shown below. The sector has an area of $60 \pi.$ What is the radius of the circle?
Asector = (83 / 360) • Acircle
Acircle = π r2
60 π = (83 / 360) • π r2 For the next step, cancel out the π's
and divide both sides by (83 / 360)
r2 = 60 • (360 / 83) = 260.24
r = sqrt(260.24) = 16.13
.
+866 
