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A circle has an area of 441π cm2. What is the circumference?
a.21π cm
b.42π cm
c.42 cm
d.21 cm
 one year ago
 one year ago
A circle has an area of 441π cm2. What is the circumference? a.21π cm b.42π cm c.42 cm d.21 cm
 one year ago
 one year ago

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completeidiotBest ResponseYou've already chosen the best response.0
A=pi*r^2 C=2*pi*r
 one year ago

UmmmHELPBest ResponseYou've already chosen the best response.1
Yeah I know but I dont know how to get the circumference from the area
 one year ago

completeidiotBest ResponseYou've already chosen the best response.0
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
 one year ago
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