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Q: How many square feet in a 80 inch radius of a circle?

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If that's the radius, use the standard formula for the area of a circle. If it's the diameter, divide it by 2 first, to get the radius.

Area of circle = pi x r x r where r is the radius. You do not specify if 23 inch is the diameter or radius of the circle. Anyway pi = 3.1415 so plug in the value of the radius in the formula above and you will get the area in square inches. Then divide that by 144 to get area in square feet.

No Radius in a SquareA radius is a feature of a circle, not a square. A square, whatever its area, does not have a radius.

Area of the circle in square feet = pi*radius2

Square footage is called "area". To find the area of a circle: A = pi x r2 So for a circle with a 10-inch diameter (which means a 5-inch radius): A = 3.141593 x (52) So the area = 78.54 inches

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I believe 8 feet 6 inch radius and 8 feet 6 inch is 8.5 feet Area of circle is pi x radius x radius = pi x 8.5 x 8.5 = 226.98 square feet

Change the inches into feet and use the area formula for a circle: pi*radius squared

A 12-inch circle has an area of 0.784 square feet.

In general the formula for the area of any circle is: pi*radius squared

In general the formula for the area of any circle is: pi*radius squared

A four-inch radius circle has an area of about 50.27 square inches.

Area of circle is pi*radius*radius. hence area of 1.5 inch circle is 7.065 square inches.

If that's the radius, use the standard formula for the area of a circle. If it's the diameter, divide it by 2 first, to get the radius.

Area of circle = pi x r x r where r is the radius. You do not specify if 23 inch is the diameter or radius of the circle. Anyway pi = 3.1415 so plug in the value of the radius in the formula above and you will get the area in square inches. Then divide that by 144 to get area in square feet.

Area of a circle: pi times radius squared

No Radius in a SquareA radius is a feature of a circle, not a square. A square, whatever its area, does not have a radius.

Divide the diameter by 2 to get the radius. Then use the standard formula for the area of the circle (which is pi times radius squared).

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