Area = pi R2
Circumference = 2 pi R
Area/Circumference = pi R2/2pi R = 1/2 R
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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.
Take the circumference and multiply it by it's height to get the lateral surface area.
What do you have? The area of the circle or the circumference? Area: divide the area by pi, then square root it Circumference: divide the circumference by 2 then divide it by pi
Divide the circumference by 2pi(3.14). That will give you the radius.Square the radius and multiply by piThat will give you the area.Calculate the radius by dividing the circumference by 2pi. Then square the radius and multiply by pi to get the area.
you divide the surface area by the circumference.