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UmmmHELP
A circle has an area of 441π cm2. What is the circumference? a.21π cm b.42π cm c.42 cm d.21 cm
A=pi*r^2 C=2*pi*r
Yeah I know but I dont know how to get the circumference from the area
since you have the area of a circle, then you can find the radius of the circle once you determine the radius of the circle, you can then use it to calculate the circumference of the circle