## What is the circumference of the diameter is 30mm?

Answer: The circumference of a circle with a diameter of 30 centimeters would be 94.25 centimeters. The diameter of a circle is given by joining any two points on the circle such that the line passes through the center. In other words, the diameter of a circle is twice its radius i.e., 2r.

### What is the area of the diameter is 30mm?

The area of the circle is 706.9 cm2 .

#### How do you calculate diameter to circumference?

The formula for the circumference of a circle when its diameter is known is: Circumference = п × Diameter. Here, п is a constant which is equal to 3.14 or 22/7.

**Is girth the same as circumference?**

As nouns the difference between circumference and girth is that circumference is (geometry) the line that bounds a circle or other two-dimensional figure while girth is the distance measured around an object.

**How do you find the circumference with the radius?**

The perimeter or circumference of the circle can be found using the equation C=2π(r), where r= the radius of the circle. Since we have two semi-circles we can find the circumference of one whole circle with a radius of 4, which would be 8π.

## What is the radius of the diameter is 30?

Therefore, if the diameter is equal to 30m, then the two radii equals 30m. However, you want the radius, so half of 30m ( 302 ) is 15m.

### What is area formula?

The formula is: Area = w × h. w = width. h = height.

#### How is Dia calculated?

How To Calculate Diameter?

- Diameter = Circumference ÷ π (when the circumference is given)
- Diameter = 2 × Radius (when the radius is given)
- Diameter = 2√[Area/π] (when the area is given)

**How do you find a perimeter?**

To find the perimeter of a rectangle, add the lengths of the rectangle’s four sides. If you have only the width and the height, then you can easily find all four sides (two sides are each equal to the height and the other two sides are equal to the width). Multiply both the height and width by two and add the results.

**What is the formula for girth?**

Add the measurements of the two smallest dimensions together and multiply the result by 2. Example: 10 inches (Width) + 10 inches (Height) = 20 inches. 20 inches x 2 = 40. So, 40 is the girth of your package.

## Is diameter a girth?

As nouns the difference between girth and diameter is that girth is the distance measured around an object while diameter is (geometry) any straight line between two points on the circumference of a circle that passes through the centre/center of the circle.

### How do you find the circumference with the diameter and radius?

Finding the Diameter or Radius The circumference of a circle is equal to pi times the diameter. The diameter is two times the radius, so the equation for the circumference of a circle using the radius is two times pi times the radius.

#### How do you calculate circumference using diameter?

Write down the formula for finding the circumference of a circle using the diameter. The formula is simply this: C = πd. In this equation, “C” represents the circumference of the circle, and “d” represents its diameter. That is to say, you can find the circumference of a circle just by multiplying the diameter by pi.

**How do you find the diameter if you have the circumference?**

How to find the circumference of a circle: The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle. If a circle has a diameter of 4, its circumference is 3.14*4=12.56. If you know the radius, the diameter is twice as large.

**What is the formula for circumference?**

Formula to Find Circumference The Circumference Formula requires either the radius or the diameter of the circle for its calculation. Circumference of a Circle C = 2πr = πd

## What is circumference divided by diameter?

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.