Best Answer

C = pi*d

By algebraic rearrangement

d = C /pi

NB pi is a mathematical constant with the value of 3.141592654....

For school work it is approximated to 3.14.

Lvl 14

More answers

To find the diameter of a circle divide its circumference by pi

Q: How do you get diameter if you know circumference?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

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

Diameter = circumference/pi

circumference of a circle = pi * diameter.

If you know the circumference, use the formula for circumference (C=pi*diameter), but rearrange it to get Diameter= circumference/pi. Then just sub in values.

you multiply the diameter by pi.

Related questions

Circumference = Pi * diameter

The circumference is the diameter x 2.

If you know the diameter and need the circumference you times the diameter of the circle by 3.14 also known as pie. That is how you get the circumference by only knowing the diameter. :)

circumference/pi = diameter

The circumference is equal to the diameter multiplied by pi. Therefore, if you know the circumference, you can divide by pi to get the diameter.

Pi represents the ratio of the circumference of a circle to its diameter. If you know the diameter (D), then the circumference (c) is (D) *pi. If you know the circumference (C), then the diameter (D) is (C)/pi. circumference is 2PiRR is the radius.so 2R is twice the radius (a.k.a. The Diameter)That leaves you withCircumference=Diameter*PiThe circumference can be found by multiplying the diameter by pi, and the diameter can be found by dividing the circumference by pi.

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

Diameter = circumference/pi

To find the diameter of a circle, you will either need to know the area or its circumference. If you know the area: diameter = 2 x squareroot(area / Pi) If you know the circumference diameter = circumference / Pi

If you know the radius, then Diameter = 2 x (radius) Circumference = (pi) x (diameter) or Circumference = 2 x (pi) x (radius)

Multiply the diameter by pi (~3.14) to get the circumference.

Divide the circumference by pi.