Best Answer

If you mean of a circle then they are as follows:-

Circumference = 2*pi*radius or diameter*pi

Area = pi*radius squared

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Related questions

What is circumfrence and how do you find it?

The circumfrence is like a perimeter. It is the area around a circle. You can find the circumfrence of a circle by using this formula. Pi x R2 or Pi times the radius squared.

How can pi be used?

Pi (3.141...) is used for circles, and circles only. You use it to find the area and circumfrence.

How do you find the radius of a circle if you don't have the area?

If you do not have the area, what do you have? The radius is half the diamiter The radius is PieR2 Worked backwards if you know the circumfrence.

A bicycle wheel is about 26 inches in diameter find its radius circumference and area?

radius=13 area=40.82 circumfrence=8.28025477707

How do you find the circumfrence of a circle when you have the area?

Divide the area by pi then square root your answer which will give the radius of the circle and use 2*pi*radius to find the circumference.

How do you find area and circumfrence of a circle?

It depends on what information you have: radius, diameter, lengths of tangents from a point outside the circle, length of chord and its distance from the centre, etc. Also, the term is circumference, not circumfrence.

How to find circumfrence?

Multiply pi by the diameter.

How Do you find the circumfrence when you know the radius?

Pi x the diameter of the circle will hive you the circumference. The diameter is double the radius so the answer to your question is pi2r.

What is the area of a circle with a circumfrence of 33?

Approximately 86.7 units squared.

What is the area of a circle that has a circumfrence of 18?

The area of a circle that has a circumference of 18 is 25.78 inches squared.

How do you find the diameter of a circle if you have the circumfrence?

divide by pi which is 3.1415927 and on and on

HOW TO FIND the circumfrence of a circle?

The circumference of a circle is (diameter) multiplied by (pi).