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Area of a circle in square feet = pi*radius2

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Q: What is the square footage of a 20ft by 20 foot diameter circle?

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The area is 314.159 square feet.

If the 18 stands for the radius, then the area formula : A= Pi r2 can be used. The question is standed strangely.

circumference = π x diameter => diameter = circumference ÷ π ~= 20ft ÷ 3.14 ~= 6.37 ft

Double the value of the radius which in this case is 2*20 = 40 feet

18ft*20ft = 360 square feet

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The area is 314.159 square feet.

20ft * 15ft = 300 square feet.

If the 18 stands for the radius, then the area formula : A= Pi r2 can be used. The question is standed strangely.

20 feet X 3.14 = 62.8

If each side of the square is 20-ft, then the area of the square is (20 x 20) = 400 square feet.

circumference = π x diameter => diameter = circumference ÷ π ~= 20ft ÷ 3.14 ~= 6.37 ft

Double the value of the radius which in this case is 2*20 = 40 feet

20ft X 6.25ft = 62.5 ft2

400 square feet

assuming that you've measured the room in feet, then square area=Width x Length... so 12ft x 20ft = 240ft2

The area is the same as that of a big 20 ft circle. Assuming the 20 ft refers to the diameter of the circle, its area is 314.159 sq ft (to 3 dp)

If that is 20ft by 20ft then there are 400 square feet

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