Circle Area Calculation Using Circumference
Which of the following expresses the area of a circle in terms of C. It's circumstances?
Answer: C^2/4π
Explanation
The area of a circle can be expressed in terms of its circumference C as:
A = C^2 / 4π
This is because the circumference C is related to the radius r by:
C = 2πr
And the area A is related to the radius r by:
A = πr^2
Substituting the expression for r in terms of C, we get:
A = C^2 / 4π
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