Question 1044022
What is the expression for the area of the circle which has a circumference of C? Express your answers as a rational expression in terms of C and pi.
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C = 2pi*r
--> r = C/(2pi)
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Area = pi*r^2
{{{Area = (pi*(C/(2pi)))^2}}}
{{{Area = (pi*C^2/(4pi^2)))}}}
{{{Area = (C^2/(4pi)))}}}