Divide the area by pi then square root your answer which will give the radius of the circle and use 2*pi*radius to find the circumference.
You would have to round since area will not be able to be represented without rounding.
Pi * R squared, where R is the radius of the circle in question
Because you might have to measure a cylider, such as the capacity of fluid oz's in a can of soda and maybe you have a room and it's shaped as a circle u might wanna find how much carpet u need...? sorry, im not sure if I'm helping! :( I covered area 3 years ago!!
It says so in the formula
Assuming that 1inch is your diameter, your radius is, of course, 0.5. Since the area of a circle is expressed asA=(pi)r2simply plug in the radius to this equation. You will get your area to be pi*0.25in2, which is roughly equal to 0.78539inches2.
The circumfrence is like a perimeter. It is the area around a circle. You can find the circumfrence of a circle by using this formula. Pi x R2 or Pi times the radius squared.
It depends on what information you have: radius, diameter, lengths of tangents from a point outside the circle, length of chord and its distance from the centre, etc. Also, the term is circumference, not circumfrence.
The area of a circle that has a circumference of 18 is 25.78 inches squared.
The circumference of a circle is (diameter) multiplied by (pi).
If you do not have the area, what do you have? The radius is half the diamiter The radius is PieR2 Worked backwards if you know the circumfrence.
The circumfrence; Pi (or 3.14) times the width across the circle :)
the circumfrence of a circle is pi times it's radius squared.
Approximately 86.7 units squared.
divide by pi which is 3.1415927 and on and on
If you mean of a circle then they are as follows:- Circumference = 2*pi*radius or diameter*pi Area = pi*radius squared
If you know the diameter of the circle, multiply that by Pi (about 3.1416). The result is the circumference.
radius = circumference/(2*pi)