Find the radius r of each circle if the area of the sector i

Find the radius r of each circle if the area of the sector is 28.

Find the radius r of each circle if the area of the sector is 28. (a) 0.6 rad

Solution

area of sector= (theta/360)(pi*r^2)

Here angle is in radians which is 0.6 radians

0.6*180/pi degree= 34.3949 degree

28= (34.3948/360)(3.14*r^2)

r^2= 93.33

r=9.66