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Subjects>Math>Math & Arithmetic

How man square feet in a 21ft diameter circle?

Updated: 10/24/2023

Wiki User

∙ 6y ago

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The area of a circle can be calculated using the formula: A = πr^2. If the diameter is 21ft, the radius would be half of that, which is 10.5ft. The area of the circle would be approximately 346 square feet.

∙ 5mo ago

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Wiki User

∙ 6y ago

The area of a circle is PI times the radius squared.

If the diameter is 21 feet, the radius is half that or 10.5 feet.

Area = PI * 10.5 * 10.5 = 346.36059 square feet

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How many sq ft in 21ft diameter circle?

Area = pi*11.52 = 415.4756284 or 415.48 square feet to two decimal places

How many square feet in a 7' diameter circle?

There are about 38.48 square feet in a 7' diameter circle

What is the square feet of a circle with a diameter of 45 feet?

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

What is the diameter of a circle with an area of 14 square feet?

The diameter is 4.222 feet.

What is the area of a circle if the diameter is 32 feet?

The area of a circle if the diameter is 32 feet is: 804.2 square feet.

Related questions

How many sq ft in 21ft diameter circle?

Area = pi*11.52 = 415.4756284 or 415.48 square feet to two decimal places

How many square feet in a 7' diameter circle?

There are about 38.48 square feet in a 7' diameter circle

What is the square feet of a circle with a diameter of 45 feet?

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

What is the length of the diameter of a circle that has an area of 78.5 square feet?

A circle that has an area of 78.5 square feet has a diameter of 10 feet.

What is the area of a circle with a diameter of 8 feet?

The area of a circle with a diameter of 8 feet is: 50.27 square feet.

What is the area of a circle that has a diameter of four feet?

The area of a circle that has a diameter of four feet is: about 12.57 square feet.

The area of a circle if the diameter is 4.3 feet what is the answer?

The area of a circle, if the diameter is 4.3 feet, is: 14.52 square feet.

What is the area of a circle with a diameter of 6 feet?

A circle with a diameter of 6 feet has an area of 28.27 square feet.

How many square feet in a 72 inch diameter circle?

A 72-inch diameter circle has an area of: 28.3 square feet.

How many square feet in a circle with 48 inch diameter?

A 48-inch diameter circle has an area of: 12.57 square feet.

What is the diameter of a circle with an area of 14 square feet?

The diameter is 4.222 feet.

What is the area of a circle that has a diameter of 2 feet?

The area of a circle with a diameter of 2 feet is 3.14159 square feet, approximately.

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