Q: How many square feet in a circle with the radius of 9ft?

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The area of a circle with radius r feet is pi*r*r square feet.

If the radius of a circle is 80 inches, then the area of the circle is 139.6263 square feet. (rounded)

About 1,963.49 square feet.

A circle with a radius of 75 feet has an area of 17671.458676442588 square feet. You calculate this by using the area of a circle formula, which is A=pi*r^2.

Area of the circle in square feet: pi*radius squared

Related questions

The area of a circle with radius r feet is pi*r*r square feet.

If the radius of a circle is 80 inches, then the area of the circle is 139.6263 square feet. (rounded)

314 square feet.

About 1,963.49 square feet.

A circle with a radius of 75 feet has an area of 17671.458676442588 square feet. You calculate this by using the area of a circle formula, which is A=pi*r^2.

Area of the circle in square feet: pi*radius squared

452 square feet.

Area of a circle = pi*radius squared

A circle with a radius of 50 feet has an area of pi*502 = 7854.0 sq ft

That would be 5026.55 square feet.

3,017.54sq ft

A 25-foot radius circle is 1,963.5 ft2