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

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If the area of a circle is given as 67cm squared, the diameter is 9.236 cm and the circumference is 29.02 cm

Square root (Area/pi) to get the radius Then 2xRadiusxPi= Circumference

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.

Times length times width

Divide the circumference by 2*pi which will give the value of the radius. Then use p*radius2 to find the area of the circle.

Diameter of a circle = circumference/pi

Area = Circumference squared divided by 4pi.

When the shape is a circle, then the perimeter is called"circumference".The circumference IS the perimeter of a circle.

By using the other information supplied about the circle to calculate either its radius (from which its area can be calculated) or its area (if the circle is similar to another with a given area and some ratio between the two circle is given):If the diameter is given: radius = diameter ÷ 2If the circumference is given: radius = circumference ÷ 2πIf the circle is similar to another circle which has a given area, and the length ratio is given; square the length ratio to get the area ratio and apply to the given area.

The circumference is: 32.1

circumference of a circle = 2*pi*radius or pi*diameter

3020.68cm2

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