Diameter of a circle = circumference/pi
circumference/pi = diameter
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
In a circle, the circumference and diameter vary directly. Which of the following equations would allow you to find the diameter of a circle with a circumference of 154 if you know that in a second circle the diameter is 14 when the circumference is 44?
Multiply the diameter by Pi (about 3.1416). The result is the circle's circumference.
Diameter = circumference/pi
Diameter = circle's circumference/pi
You multiply the circle's diameter by 3.14 (Pi) to get the circumference.
Pi x diameter
The circumference of a circle with a diameter of 18 inches is 56.5 inches.
Divide the circumference by Pi.
Multiply the diameter by the constant pi.
Diameter of a circle = circumference/pi
pi times diameter
Divide the known circumference by pi to find the diameter of the circle.
circumference of a circle = pi*diameter or 2*pi*radius
Since circumference is found by multiplying pi by the diameter of the circle, the diameter can by found using the inverse operation. diameter = circumference/pi