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You dived the area by the circumference of the circle.

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Q: How do you fund the circumference of circle when you know the area?
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How do you find the area of a circle if the circumference is 10?

We know that the area of a circle is pi * r2. We also know that the circumference of a circle is pi * d. Therefore, when you know the circumference of a circle and want to know the area, divide the circumference by pi to give you the diameter of the circle, divide the diameter by 2 to give you the radius, square the radius and then multiply by pi to get the area. So, 10/pi = 3.183. 3.183/2 = 1.5915. 1.59152 = 2.533 2.533 * pi = 7.958 to 3 decimal places. The area of your circle is therefore 7.958cm2.


What is the surface area of a sphere whose great circle has a circumference of 40pi?

The great circle has circumference 40pi and we know circumference is 2pixr so 20 is the radius of the sphere. Now use this and the formula that surface area is 4pir^2 so the surface are is 4pi(20)^2. or pi(1600)


How do you find the diameter of a circle if you know the circumference?

Divide the known circumference by pi to find the diameter of the circle.


The radius of the circle is 5inches what is the circumference?

The circumference of a circle that has a radius of 5 inches is 10 X pi or approximatly 31.415926535897932384626433832795. If you know the radius you can find the circumference by multiplying it by 2(pi)


How do you find circumference if you know diameter?

If you know the diameter and need the circumference you times the diameter of the circle by 3.14 also known as pie. That is how you get the circumference by only knowing the diameter. :)

Related questions

How do you convert area of circle if you know the circumference?

It depends on what you want to convert the area of the circle into.


How do you find the diameter of a circle in the terms of pi?

To find the diameter of a circle, you will either need to know the area or its circumference. If you know the area: diameter = 2 x squareroot(area / Pi) If you know the circumference diameter = circumference / Pi


How do you calculate the area of a circle if you know the circumference?

By dividing its circumference by 2*pi will give the radius of the circle and its area = pi*radius2


How do you find the area of a circle if you only know its circumference?

Divide its circumference by 2*pi which will give the radius of the circle. Area of the circle then is pi*radius squared


How do you find the area of a circle if the circumference is 10?

We know that the area of a circle is pi * r2. We also know that the circumference of a circle is pi * d. Therefore, when you know the circumference of a circle and want to know the area, divide the circumference by pi to give you the diameter of the circle, divide the diameter by 2 to give you the radius, square the radius and then multiply by pi to get the area. So, 10/pi = 3.183. 3.183/2 = 1.5915. 1.59152 = 2.533 2.533 * pi = 7.958 to 3 decimal places. The area of your circle is therefore 7.958cm2.


How do you calculate the area of a curcumfrence?

There's no such thing as the "area of a circumference", no matter how you spell it.A circumference is a length, representing the distance around a circle, and doesn'thave an area.If you know the circumference of a circle, and you call it 'C', then the area of the circle isC2 / (4 pi)


How do you find the area of a circle when you already know the circumference?

radius = circumference/(2*pi)area = pi*radius2So Area in terms of Circumference is A = pi [C/2pi]2or (circumference)2/4 pi


How do you find the circumference of a circle without knowing the area?

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.


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.


How do you find the circumference of a circle of you know the area?

Divide the area by pi, which gives you the square of the radius. Take the square root and multiply by 2 pi and you have the circumference.


How do you find the perimeter if you already know the circumference of a circle?

The circumference of a circle is the length of the circle's perimeter.


When you know the circumference of a circle how do you find the diameter?

If you know the circumference of a circle, you can find the radius by dividing the circumference by the value of Pi (3.14159...)