The diameter of a circle is a value that can be known using other dimensions or measurements like radius, area, and circumference, so if you don’t know how to get the diameter of a circle, we’ll show you how to do it, applying math formulas.

## How to calculate the diameter of a circle?

calculate the diameter of a circle is a simple procedure, you need to solve a linear math formula using the math dimension provided by the problem. We will see how to solve it step by step.

### Step #1.- Calculate the diameter of the circle using the area✔

In case of you want to calculate the diameter of a circle with the area you must perform the following steps:

#### #1.1: Formula Approach:

The first step is to configure the formula and replace the values . In this case, the formula is: 2 x square root of area divided by π (3.1416). So, in the area we will put the value that the problem gives us.

#### #1.2: Operationalization:

To perform the correct calculation, first you must divide the area by pi, then calculate the square root of the result obtained.

#### #1.3: Go from radius to diameter:

O result of this operation will be the radius of the circle, so what we do is multiply by two to get the diameter.

### Step #2.- Calculate the diameter of a circle with the circumference✔

If the problem to show the value of the circumference, the procedure is simple, what you should do is the following:

#### #2.1: Formula Approach:

##### The formula in this case is as follows:

Radius diameter = Circumference / π (3.1416).

#### #2.2: Value Substitution:

So what you do is put the value of the circumference within the division.

#### #2.3: Operationalization:

Solve simple linear division. For example, if the circumference is equal to 100, dividing it by 3.1416, the result is 31.83

### Step #3.- Calculate the diameter of a circle from the radius✔

In the case of giving you the radius, the procedure is simpler, just multiply the radius value by 2 and it will give you the diameter value.

### Step #4.- Calculate the diameter of a circle in your drawing✔

He can problem arise you have to know the diameter of the drawing of a circle, in this case, they don’t offer you values or anything. To perform the calculation, you will need a compass, a ruler and a pencil. The procedures to follow are as follows:

#### #4.1: Draw a straight line:

The first thing is to draw a straight line that touches two points on the circle , that is, it must cross the circle. Points on this line will be named A and B.

#### #4.2: Divide the circle into two parts:

Proceed to locate yourself at the first point or point A using the metal tip of the compass then open the compass to the middle of the circle (that is, the midpoint that divides the circle into two equal halves).

#### #4.3: Draw two circles:

Using this compass measurement, you will position the metal tip at point A and draw a circle on the left side (outside the circle) and then draw another one from point B to the right.

#### #4.4: Draw the diameter:

Making the two new circles you can see that both converge at two points inside and outside the circle. So, you should take your ruler and draw a line that connects these two new points on the circles and you will see that it cuts the initial circle in two points again.

#### #4.5: Measure its diameter:

It is new line created is the diameter , so if you want to know your measurement just use the ruler and measure the line, the value will be given in centimeters. If you need the value in another unit of measurement, it is necessary to convert from cm to the desired unit.

these are the 4 ways there are to know the diameter of your circle, so now you can solve your geometry problems. If you want to know this and other content, We invite you to follow the publications that we will make on our blog .