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Subjects>Math>Math & Arithmetic

How man square feet in a 21ft diameter circle?

Anonymous

∙ 7y ago

Updated: 10/24/2023

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

Wiki User

∙ 7y ago

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More answers

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.

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∙ 1y ago

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Continue Learning about Math & Arithmetic

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.

How many square feet are in a circle 40 feet in diameter?

1256.64 square feet

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