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Use the Formula for the Area of a Circle
The formula is A=pi*r2 , where pi = approximately 3.1416 and r is the radius of the circle (length of a straight line drawn from the center to the outside edge of the circle. The area is pi times the radius squared.
For example, A circle 6 feet wide (6 ft. diameter) has a radius of 3 feet (diameter = 2r).
The area would be A = (3.1416) x (32) = 3.1416 x 9 = 28.2744 square feet for a 6-foot circle.
Remembering the Formulas
Many people confuse circumference and area. An easy way to remember is this:
Apple Pie Really Rocks- Area=(Pi)*r*r
Cherry Pie's Delicious- Circumference=(Pi)*diameter
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How do you calculate square footage of semi circle?
Area of a semi circle: (pi*radius2)/2 square feet
What is the formula to find square footage in a circle?
Area in square feet = pi*radius2
What is the Square footage of a circle if the radius is 22 inches?
That quantity is usually called "area".The area of any circle is (pi) (radius)2 .Area = (pi) (11 inches)2 = 380.133 square inches (rounded)To convert square inchage to square footage, divide by 144.380.133 square inches = 2.64 square feet (rounded)
What is the square footage of a 10 foot radius circle?
Knowing that the area of a circle is its radius squared times Pi, the area of a 10 ft radius circle is 100*Pi square ft, or about 314 square feet.
Is the floor area the same as the square footage?
If the square footage refers to floor area, yes.
What is the square footage of a 20' circle?
Area of a circle = pi*radius2
What is the square footage of a 20'-9 circle?
Area of a circle = pi*radius2
What is the square footage of 20 ft circle?
Area of a circle = pi*radius2
How do you calculate the square footage of a half circle?
Area of a circle is pi*radius^2. So if the radius is measured in feet, the area (or the square footage) of a half circle is: (pi*r^2)/2
What is the square footage of a 27 foot round area?
If you mean a circle then its square footage formula is: pi*radius2
What is the square footage for an 11 ft circle?
Area of a circle = pi*radius2 measured in square feet
How do you calculate square footage of semi circle?
Area of a semi circle: (pi*radius2)/2 square feet
Square footage of a 17 foot circle?
Area of the circle in square feet = pi times radius squared
What is the square footage of a 20ft by 20 foot diameter circle?
Area of a circle in square feet = pi*radius2
What is the formula to find square footage in a circle?
Area in square feet = pi*radius2
What is the square footage of a 14 foot round circle?
Area of a circle: pi*radius squared
A circle that is 16 feet wide what is the square footage?
The area of a circle is: pi times radius squared
