Circumference of a circle = 2*pi*radius
divide the circumference by pi (3.1416) and divide the product by two that will give you the radius
To find the circumference of a circle, you need to multiply the radius by 3.14.
If you know the circumference then divide that by (2 x pi) and you will get the radius. The width is unnecessary information.
The formula to find the circumference of a circle is C = 2πr, where r is the radius of the circle. To find the circumference, you first need to find the radius by using the formula for the area of a circle (A = πr^2). Given that the area is 201.06, you can solve for the radius. Once you have the radius, you can plug it into the formula C = 2πr to find the circumference.
Circumference = 2*pi*radius So the radius = circumference/2*pi
By using the equation 2πr that is used to find the circumference, you get 12.56m
Divide the circumference by 2PI to find the radius. ( C = 2PI*Radius)
Pi is the number of times the diameter of a circle will fit into the circumference. Pi is not a circle, and does not have a circumference or area. To calculate a circumference USING pi, the circumference is diameter * pi. To find the area using pi, area = pi * radius * radius
To find circumference you must multiply twice the radius by π, or using the diameter, if it gives it to you, multiply that by π.
Circumference = 2*pi*radius
Circumference = 2*pi*radius So Radius = Circumference/(2*pi)
OK, SO to find the area of a circle, you find the radius (half of the diameter), and fit it into the equation πr2=A where r equals radius and A = area. The perimeter of a circle is π multiplied by the diameter. π is ≈ 3.1415296.