## How do you go from circumference to diameter?

How do I find the diameter from the circumference?

1. Divide the circumference by π, or 3.14 for an estimation.
2. And that’s it; you have the circle’s diameter.

### What is the diameter of a 60cm circumference?

Circles (basic)

Diameter Circumference(approx) Circumference
4 cm 12 cm 12.56cm
8 cm 24 cm 25.12cm
20 cm 60 cm 62.8cm
40 cm 120 cm 125.6cm

#### What ring size is 60mm circumference?

Inches Millimeters RING SIZE
2.29 59 mm 8 1/2
2.35 60 mm 9
2.40 61 mm – 62 mm 9 1/2
2.45 63 mm 10

What is the diameter of 63.5 mm circumference?

20.1mm

Circumference (mm) Diameter (mm) US
63.5mm 20.1mm 11
64.5mm 20.6mm 11 ½
66mm 21mm 12
67.5mm 21.4mm 12 ½

What is the ratio of diameter to circumference?

Pi
Circles are all similar, and “the circumference divided by the diameter” produces the same value regardless of their radius. This value is the ratio of the circumference of a circle to its diameter and is called π (Pi).

## What is the circumference of a 3 inch diameter circle?

If the diameter is 3 inches, then the circumference would be 3π . If you are not allowed to use calculators, most instructors recommend using 3.14 as the π value and calculating manually.

### How much bigger is circumference than diameter?

Ancient mathematicians figured out that the circumference of a circle is always a little more than three times the diameter of a circle. Since then, they narrowed that “little more than three times” to a value called pi (pronounced “pie”), designated by the Greek letter π.

#### What is the circumference of a 3 Metre diameter circle?

Answer. We know that C = 2πr. Since the radius is 3m, we know that C = π x 6m = C= 18.84m (to 2 decimal places).

What ring size is 7.5 cm circumference?

Ring Size Chart

Ring Size Inside Circumference (Inches) Inside Circumference (Centimeters)
6.5 2.09″ 5.30 cm
7 2.14″ 5.43 cm
7.5 2.19″ 5.56 cm
8 2.24″ 5.68 cm

What is the circumference of a 3 mm circle?

We know that C = 2πr. Since the radius is 3m, we know that C = π x 6m = C= 18.84m (to 2 decimal places).

## What is the ratio of circumference to diameter?

Circumference to diameter. You have probably noticed that, since diameter is twice the radius, the proportion between the circumference and the diameter is equal to π: C/D = 2πR / 2R = π. This proportion (circumference to diameter) is the definition of the constant pi.

### How to find the radius from the circumference?

How do I find the radius from the circumference? To find the radius from the circumference of a circle, you have to do the following: Divide the circumference by π, or 3.14 for an estimation. The result is the circle’s diameter. Divide the diameter by 2. And there you go, you found the circle’s radius.

#### How to calculate the circumference of a meter?

1 Multiply the radius by 2 to get the diameter of 2 meters. 2 Multiply the result by π, or 3.14 for an estimation. 3 And there you go; the circumference of a circle with a radius of 1 meter is 6.28 meters.

How do you find the diameter of a circle?

If you want to find the diameter from the circumference of a circle, follow these steps: Divide the circumference by π, or 3.14 for an estimation. And that’s it; you have the circle’s diameter .