In a circle, the area of the circle is pi times the radius squared
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The answer depends on what the ratio is relative to!The ratio of a circumference to the area of a circle is half the radius.
There is no direct ratio. The area is related to the square of the radius by the factor "pi." A = (pi) r2 (Pi is about 3.1416)
It depends on the ratio of what of the circle? Its circumference, diameter, area?
a. 2 to 5.
what z radius ratio