Find the area of the circle below. R = 5cm, d = 6dm, C = 15.7m

Find the area of the circle below. R = 5cm, d = 6dm, C = 15.7m

(1)S=πr2=πx5x5=25πcm*2
(2)S=π(d/2)*2=π3x3=9πdm*2
(3)r=C/(2π)=15.7/(2π)S=πr*2=π(15.7/2π)*2=246.49/(4π)