Explain each step in the process of finding the area of a circle given the circumference

Question

Mathematics

Madalynn

14 February, 18:04

Explain each step in the process of finding the area of a circle given the circumference

+4

Answers (2)

Know the Answer?

Seth Mcmahon · Answer 1

Area=pi*radius squared (A=pi*r^2)

Circumference = 2*pi*radius (C=2*pi*r)

So, if you know C, plug it in and solve for r.

Then plug r into 1st equation to get A.

Bryanna Ray · Answer 2

Substitute the known circumference into the formula C = πd. Divide by π to find the diameter. Then divide the diameter in half to find the radius. Substitute the radius into the area formula, A = πr2. Square the radius and multiply by π to get the area.