Study guides

☆☆

Q: How do you find the area of a circle knowing only the circumference?

Write your answer...

Submit

Still have questions?

Related questions

If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.

To find the circumference of a circle, you need only know the radius or diameter of the circle. The circumference of a circle is calculated as 2 x Pi x radius OR Pi x diameter. Pi is approximately 3.1415926.

The circumference is: 32.1

You will have to measure some part of the circle. As long as you have absolutely no information about a circle, you can't do any calculations.

3020.68cm2

The area of a circle when the circumference is 10 inches is: 7.96 square inches.

Divide the circumference by the value of Pi - that will give you the diameter.

Divide the circumference by 3.14159265 (3.14 for rough approximation) to find the diameter of a circle.

Area = (circumference squared)/(4 pi)

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

To find the circumference of a circle then multiply pi (3.14159265...) by the diameter of the circle. To find the area then multiply pi by the radius squared.

Area of the circle = (circumference)2 / (4 pi)Area = 0.0796 circumference2(rounded)

People also asked