The area of a circle equals pi (3.1415926...) times the radius squared, or pi(r2). So if the distance from the center of the circle to the edge is 2 feet, you would multiply 2 by 2, and then multiply that result by pi, giving an answer of 12.6 square feet (assuming you rounded pi off to 2 decimal places).
pi x radius x radius equals the area of a circle .
The area of a circle is computed by the formula A = pi * r2 (r is the radius of the circle)For a 20 foot circle, the radius is 10 feet and the area is 314.16 square feet.
If you mean a circle then its square footage formula is: pi*radius2
length x width = area (sq. foot)
Square footage is the length of your room times the width. For a circular room, measure the diameter (length across the circle), divide by 2 to get the radius (length across half the circle), multiply by pi and square it. The formula for the area of a circle is πr^2, and Pi (π)= 3.1416
There is a formula that calculates square footage for an area. This formula is: Area = Length x Width. By multiplying these two factors you convert feet into square feet.
To calculate square footage of a pipe you need to use the area formula of a circle, a=1/2bh. then find the circumference of the entire pipe.
The area of a circle is computed by the formula A = pi * r2 (r is the radius of the circle)For a 20 foot circle, the radius is 10 feet and the area is 314.16 square feet.
If you mean a circle then its square footage formula is: pi*radius2
Area of a semi circle: (pi*radius2)/2 square feet
Area in square feet = pi*radius2
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
The formula for calculating square footage is a=S2 (a = area and s = side) Example, to calculate the square footage of a room that is 15 feet wide and 12 long, you would multiply 15 x 12, which will give you the square footage.
length x width = area (sq. foot)
The area of a circle is calculate as:A = pi x r squared If the radius "r" is in feet, the area will be in square feet.
Square footage is the length of your room times the width. For a circular room, measure the diameter (length across the circle), divide by 2 to get the radius (length across half the circle), multiply by pi and square it. The formula for the area of a circle is πr^2, and Pi (π)= 3.1416
There is a formula that calculates square footage for an area. This formula is: Area = Length x Width. By multiplying these two factors you convert feet into square feet.
One thing that can be calculated using a Square Footage Calculator is the Length and Width of a Rectangle, Circle, Square or Triangle. This comes in handy for calculating room sizes.