**How To Find The Diameter Of A Circle**

**Well, in this article we teach you How to Calculate the Diameter of a Circle.
If you know any other dimensions of the circle: radius, circle, or area, it is easy to calculate the diameter of the circle. If you do not know any of the above measurement methods, but there is a pie chart, this is also possible. If you want to know how to calculate the diameter of a circle, follow these easy steps:**

Here you will learn about How To Find The Diameter Of A Circle By **2 Method**

Method 1 of 2:

1st let’s try to Calculating the Diameter of a Circle Using the** Radius, Circumference, or Area**

**1.** If you know the radius of the circle, double it to get the diameter. Radius is the distance from the center of the circle to the edge.

### Example(s):

If the radius of the circle is 4 cm, then the diameter of the circle is 4 cm x 2, or 8 cm.

**2.** If you know the circumference of the circle, divide it by Ï€ to get the diameter. Î is 22/7 = 3.14, but you should use a calculator to get the most accurate results.

### Example(s):

If the circumference of the circle is 10 cm, then the diameter is 10 cm/Ï€, or 3.18 cm.

**3.** If you know the area of the circle, divide the result by Ï€ and find its square root to get the radius; then multiply by 2 to get the diameter. This can go back to find the formula for the area of the circle, A = Ï€r, to get the diameter. You can transform this into r = âˆš(A/Ï€) cm.

### Example(s):

If the area of the circle is 25 cm, divide that by Ï€ and find the square root.This equals cm 2.82cm, so the diameter of the circle is 2.82 x 2 = 5.64cm.

Method 2 of 2:

Second Method to Calculating the **Diameter of a Circle from a Drawing of a Circle**

**1.** Draw a horizontal line from side to side within the circle. Use a ruler or ruler to do this. It can be upstairs, near the bottom or somewhere in between.

**2. **Label the points where the line crosses the circle points “A” and “B.”

**3. **Draw two overlapping circles, one centered on A and the other centered on B. Make sure that the two circles overlap like a Venn diagram.

**4. **Draw a vertical line through the two points where the outer circle intersects. This line marks the diameter of the circle 4.

**5. **Measure the diameter. Use a ruler or more precisely a pair of digital vernier calipers to measure it. You’re done!

**I hope this Helped you to Find The Diameter Of A Circle.**

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