how do you find the square footage of a circle?

Answer 1

Area = π r²
Example
Calculate area of circle of radius 10 m
Area = π x 10 x 10 m²
Area = 314 m²

Answer 2

The formula for the area of a circle is PR ^2(where P is Pie or 3.1416), and R is the radius, and squared under the formula.

For illustration purposes, say the radius of a circle is 10 feet,
then its area will be as computed below:

A = PR^2
A =(3.1416)(10)^2
A = (3.1416) x 100 ft
A = 314.16 square feet.

Additionally, if you want to measure the length of the circumference of this circle, the formula is:

C = 2PR ( which is the derivative of the area PR^2)
C = 2(3.1416) 10 = 62.83 ft.

The circumference is the loop made by the circle if it were
cut in the middle. Think of a hulahoop when you cut in the middle. The length of that stretched loop is the circumference of the circle before it was cut.

Answer 3

Radius squared times Pi

Answer 4

You mean area?

Area of a circle = Pi * (radius)^2

Example:
radius = 2 feet
Area = Pi * 2^2
= 4 * pi square feet

Answer 5

PiR^2
where Pi = 3.14159
and R is the radius in feet.
If finding R is awkward, measure across the circle and divide by w.

Answer 6

Hello

I assume that you mean the area.

So we use pi*r^2 = a where pi is approx. 3.14159 and r is the radius so if we have a circle or radius 3in. it would be 3*3*3.14 or about 28.26 square inches.

Hope This Helps!

Answer 7

area (circle) = PI * R * R

if R is in ft, then Area is in squared ft
If r is in meter, then Area is in squared meter, etc.

Answer 8

A=pir^2 this will give you area in square feet

Answer 9

You multiply Pi (3.1416) by the radious square.
Pir2.

Answer 10

pi * r^2

3.14 x radius squared