Credit:Space ImagesBlend ImagesGetty Images
Q:

# How do you convert circumference to diameter?

A:

To calculate a circle's diameter from its circumference, one should divide the circumference by the constant pi, which is an irrational number approximately equal to 3.14159265358979.

Know More

Circumference is defined as the distance around a circle; the diameter is the straight-line distance across the circle that touches two points on its border and goes through its center. The ratio of a circle's circumference to its diameter is the constant pi. In other words, circumference/diameter = pi, or circumference = pi * diameter. Therefore, the length of the diameter of a circle is equivalent to its circumference divided by pi.

Similarly, the length of a circle's radius, (the distance from the circle's center to any point on its border), is equivalent to its circumference divided by (2*pi). The radius is half as long as the diameter.

## Related Questions

• A:

Find the diameter of a circle with a given circumference by solving for the formula "d=C/pi," where d is the diameter, C is the circumference and pi is 3.1459. For this problem, find the diameter of a circle that has a circumference of 18.8754 inches.

Filed Under:
• A:

The circumference of a circle is the distance around the outskirts of the circle. Knowing the radius of any circle allows one to calculate its circumference.

Filed Under:
• A:

The lateral surface area of a cylinder is calculated by multiplying the circumference by the height using the formula 2(pi)(r)(h). The overall overall surface area is calculated by adding the area of each base to the lateral area using the formula 2(pi)(r)^2 + 2(pi)(r)(h).