A good strategy is to use whatever you do know about the circle, along with any
formula that relates the information you do have to the circumference of a circle.
Diameter = Circumference/pi
diameter = circumference/pi
You cannot find the diameter of something from its circumference unless it is a circle and, in that case, diameter = circumference/pi
Circumference = Pi * diameter
Divide the circumference by Pi to find the diameter.
Circumference = diameter(pi) so divide the circumference by pi to get the diameter.
Diameter = radius * 2 Circumference = pi * diameter.
circumference/pi = diameter
diameter*pi = circumference
Diameter = circumference/pi
Circumference: Diameter x pi (3.1415926535897932384...)
To find the diameter of a circle when given the circumference, you can use the formula: circumference = π * diameter. In this case, the circumference is 13.5 inches. So, 13.5 = π * diameter. To solve for the diameter, you divide 13.5 by π. Therefore, the diameter of the circle is approximately 4.3 inches.