To calculate this you will need the diameter of the circle. The formula is: diameter/2*pi If you don't know the diameter you can also use the area of the circle: Sqrt(Area/pi) = radius
If a circle has the area A and radius r, thenA = pi * r^2
The area of a circle with a known radius can calculated using the following formula where r is the radius : A = Pi(r)2
this is called finding the circumference. The formula is 2*pie*radius
Using 3.14 as Pi the area of circle is: 1017.36
It is the formula for finding the area of a circle which means: pi times radius squared
Area of circle = pi*(radius)2
The formula for the circumference of a circle is pi * diameter or (2 radius.)
2*pi*radius = perimeter or circumference of a circle radius = circumference/2*pi
The formula to get the area of a circle ("R" being the radius of the circle). Radius means the distance from the center of the circle to the edge.It means pi times radius squared which is the formula for finding the area of a circle.
The area of a circle with a known radius can calculated using the following formula where r is the radius : A = Pi(r)2
If a circle has the area A and radius r, thenA = pi * r^2
Hell are you talking about?!? A radius is a dimension of a circle! A rectangle has no stinking radius!
Area of a circle = pi*radius squared
Area of a circle = pi*radius2
this is called finding the circumference. The formula is 2*pie*radius
Pi * R squared, where R is the radius of the circle in question
It is the formula for finding the circumference of a circle which is the same as 2*pi*radius