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Subjects>Math>Math & Arithmetic

What is the formula for area and circumference of a circle?

Anonymous

∙ 13y ago

Updated: 12/7/2022

The formula for the area of a circle is pi * radius squared.

The circumference of a circle's formula is pi * diameter.

NOTE: pi equals approx. 3.14

Wiki User

∙ 13y ago

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More answers

The formula for the circumference of a circle is:

radius (x) 3.14 (pi)

Area is...

Radius2 x 3.14

Wiki User

∙ 13y ago

Area= (Pi)x Radius^2 Circumference= 2*(pi)*Radius or (pi)*diameter

Wiki User

∙ 16y ago

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Continue Learning about Math & Arithmetic

What is the circumference of a circle is 22 units what is the area?

Divide the circumference by (2 x pi) to get the radius. Then use the formula for the area of the circle.

Why is it pie r squared is the exactly formula for circumference?

It isn't. That is the formula for the AREA of a circle!

What is Circle formula from circle circumference to circle area?

Divide by pi then divide by 2 then square the number and then multiply by pi

What the formula in circle?

Area of a circle = pi*radius squared Circumference of a circle = 2*pi*radius or diameter*pi

How do you find the circumference if you a have the area?

You can find the circumference of a circle if you know its area by using the formulas for area and circumference. First, use the formula for area: A = pi r2. Replace A with the number for the area. Solve the formula for r, the radius of the circle, dividing A by pi and taking the square root of the answer. Once you have the number for r, the radius of the circle, plug that value in place of r in the formula for the circumference: C = 2 pi r. Then you can calculate the circumference of the circle by multiplying pi times twice the radius.

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