Q: How many square feet are in a 40 foot diameter circle?

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7.0686 square feet for a 3-foot diameter circle.

50.3 square feet for an 8-foot diameter circle.

803.84 feet

The circumference of a 19 foot diameter circle is: 59.7 feet.

Diameter = 7 feet Radius = 3.5 feet Area of circle = pi x r x r = 3.1415 x 3.5 x 3.5 =38.483 square feet.

Related questions

The square foot area of a 41-foot diameter circle is: 1,320 square feet.

A 45-foot diameter circle has an area of 1,590.4 square feet.

A circle with a 27-foot diameter has an area of 572.56 square feet.

The area of a circle with a 7-foot diameter is: 38.48 square feet.

153.93804 square feet.

3.14159265 square feet.

A circle with a diameter of 18 feet has an area of 254.5 square feet.

A circle with a diameter of 24 feet has an area of 452 square feet.

7.0686 square feet for a 3-foot diameter circle.

50.3 square feet for an 8-foot diameter circle.

The area of a circle is PI times the radius of the circle squared. The radius of a one foot diameter circle it 1/2 or .5 feet. .5 squared is .25 PI is 3.1416 3.1416 times .25 = .79 square feet So, there are about .8 square feet in a 1 foot diameter circle.

The area is 3318.3 square feet, approx.