Math and Arithmetic
Algebra
Geometry

# What is the circumference of a circle whose area is 10 pi?

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Area = pi * rÂ² ; and Circumference = pi * 2 * r. So Area = pi * 10 = pi * rÂ². Divide both sides by pi:

• rÂ² = 10 --> r = âˆš10
• Circumference = pi * 2 * âˆš10
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2pi^10

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## Related Questions The circumference of circle whose diameter is 10 is: 31.42 (diameter x Pi = circumference). The area of a circle when the circumference is 10 inches is: 7.96 square inches. A circle has a radius, diameter and circumference, not a base and a height. The area of a circle whose diameter is 10 cm is: 78.54 cm2 Circumference of circle: 2*pi*10 = 62.832 cm rounded to 3 decimal places  There is a problem here. A circle with a 7-foot diameter has a circumference of 21.99 feet, not 10 feet.If the circumference is 10 feet, that would make the diameter 3.183 feet. Circumference = (pi) x (diameter) = 10 pi = 31.416 yards (rounded) 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. The circumference of a circle with a diameter of 10 is: 31.416. (Circumference = Pi x diameter) The circumference of a 10-inch diameter circle is: 31.42 inches.  Divide the circumference of 62.8 by 2*pi to find the radius which is about 10 units Area of the circle: pi*10*10 = 100*pi square units  That's easy - 10. Or did you mean circumference or area? The circumference of a 10 inch circle is: 31.416 inches(circumference = diameter x pi). The formula for circumference is 2 x pi x radius. For a circle of 10 feet, the cirumference would be 62.8 feet. The formula for area is pi x r2. For a circle of 10 feet, the radius would be 314.16 ft. If you read the question properly, you will see that the area will be 10 pi.  The circumference of a circle with a 10 millimeter diameter is about 31.42 mm The circumference of a circle with a radius of 10 inches is about 62.83 inches. A circle with a radius of 10 inches has a circumference of 62.8 inches.  The circumference of a 10-inch diameter circle is: 31.4 inches. you have to quote the diameter or radius or circumference of the circle to calculate the area. If diameter 78.53. If radius 314.15. If circumference 7.95

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