Best Answer

Square feet are a measure of area, and the area of a circle is usually given by the equation:

a = πr2

The circumference of a circle is given with the equation:

c = 2πr

To find the area of the circle given only it's circumference, we can rearrange the circumference equation, solving it for r, and then substituting it into our radius equation in place of r.

c = 2πr

r = c / 2π

a = πr2

a = π(c / 2π)2

a = πc2 / 4π2

a = c2/π

So the area of a circle is equal to the square of it's circumference divided by pi.

User Avatar

Wiki User

โˆ™ 2012-07-31 03:14:12
This answer is:
User Avatar
Study guides


20 cards

A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

See all cards
1779 Reviews

Add your answer:

Earn +20 pts
Q: How do you figure square feet using a circumference?
Write your answer...
Still have questions?
magnify glass
People also asked