The circumference is 22 Circumference = 2πr 22 = 2πr It's the same thing as π*diameter 22 = <span>πd divide both sides by </span><span>π to isolate d d, or the diameter, equals 7.0028175 cm, or approx. 7 cm the radius is half of the diameter so it is </span><span>3.50140875, or approx. 3.5 cm the area of the circle is </span><span>A = π r² A = </span>π (3.5)<span>² A = </span><span>π (12.25) A = 38.4845 The area equals approximately 38.5 cm^2.
