Double the Radius to Calculate the Diameter.
diameter = 2 * radius
to calculate circumference you find a circles radius or diameter. you do diameter times pi or radius times 2 times pi. the you have circumference!
You can either measure it, or calculate it if you know the diameter (radius = diameter / 2), or the circumference (radius = circumference / (2pi)).
If you know the circumference, the ration of the diameter to the circumference is π, so diameter = circumference/π If you have the radius, diameter = 2 x radius
Double the Radius to Calculate the Diameter.
diameter = 2 * radius
Radius of a circle = diameter/2
The radius of a circle is half of its diameter.
Radius of a circle = diameter/2
to calculate circumference you find a circles radius or diameter. you do diameter times pi or radius times 2 times pi. the you have circumference!
You can either measure it, or calculate it if you know the diameter (radius = diameter / 2), or the circumference (radius = circumference / (2pi)).
If you know the circumference, the ration of the diameter to the circumference is π, so diameter = circumference/π If you have the radius, diameter = 2 x radius
Circumference = diameter*pi
Divide the diameter by 2.
Of a circle: divide the length of the circumference by the value of Pi (about 3.14159). The answer is the diameter. Half of the diameter is the radius
The radius is one -half of the diameter. It is the distance from the circle center to any point on the circumference.