If the area of a circle is 70cm^2,find the radius?

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Answer 1 · 2018-05-15T16:45:44

r = ~4.72 cm

Area of Circles

#A = pir^2#

#70 = pir^2#

Divide by pi to get #r^2# isolated.

#70/pi = r^2#

Now, find the square root:

#sqrt(70/pi) = r#

#r# = 4.72034871941