Q: If the area of a circle is 8pi what is the length of its diameter?

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the area doubles. for example: the radius is 2. so the area is 4pi. then double the original radius of 2 to 4 and the area is 8pi. 8pi is double 4pi.

If circ is 8pi the radius must be 4 so area is 16pi

The formula for finding the circumference is the diameter times pi because the radius is half of the diameter, the diameter of this circle would be 8 8 times pi equals approximately 25.1327 Or you could leave it in terms of pi and say 8pi (using the symbol)

8pi, the circumference is 2pi multiply by radius

The is not stated that the circle inside the square was the greatest possible circle, so all one can say is 8pi at most.

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the area doubles. for example: the radius is 2. so the area is 4pi. then double the original radius of 2 to 4 and the area is 8pi. 8pi is double 4pi.

If circ is 8pi the radius must be 4 so area is 16pi

The formula for finding the circumference is the diameter times pi because the radius is half of the diameter, the diameter of this circle would be 8 8 times pi equals approximately 25.1327 Or you could leave it in terms of pi and say 8pi (using the symbol)

8pi, the circumference is 2pi multiply by radius

Circumference of a circle is C=2pir C=2pi(4) C=8pi C=25.12 cm Where pi is the ratio of the circumference to the diameter of any circle, approximately 3.14. There is usually a button for pi on scientific/graphing calculators.

The circumference of a circle is found using the formula pi * 2r = 3.14 * 8. The circumference of the circle is 8pi or 25.12 units.

radius of a circle = 4 inchesCircumference of a circle = 2π radiusradius = circumference/ 2π= 8π/2π= 8/2= 4

The is not stated that the circle inside the square was the greatest possible circle, so all one can say is 8pi at most.

If you mean average rate of area increase, it is 4pi cm2/cm. Simply take the total change in area, 9pi-1pi=8pi, and divide it by the total expansion.

Use the formula [2*pi*r], or [pi*d] to find circumference. Therefore, the circumference will be 8pi, which is roughly 25.13

The formula for the circumference of a circle is 2(pi)(r). From your example, r=4 cm So the answer would be 2(pi)(4 cm), or 8pi cm (this is a little more than 24 cm, since pi=3.14).

8pi/9