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** circle calculator** - step by step calculation to find the area, circumference & diameter of a circle provided along with formulas & solved example problem, in different measurement units inches (in), feet (ft), meters (m), centimeters (cm) & millimeters (mm) for the given radius value. This featured calculator brings step by step calculation for all the calculations you do by using this circle calculator. The circle formulas, solved example & step by step calculations may useful for users to understand how the input values are being used in such calculations.

The below mathematical formulas are used in circle calculator to find area, circumference & diameter of a circle.

The below solved example may be useful to understand how the values are being used in the mathematical formulas to find the area, circumference & diameter of a circle.

**Example Problem :**

Find the area, circumference & diameter of a circle having the radius of 5 cm?

**Solution :**

The given

radius r = 5 cm

**Step by step calculation**

formula to find area = π r^{2}

substitute the values

= π x 5^{2}

= **78.5714**

formula to find circumference = 2 π r

substitute the values

= 2 x π x 5

= **31.4286**

formula to find diameter = 2 r
substitute the values

= 2 x 5

= **10**

The area, circumference & diameter of a circle may required to be calculated in different measurement unit systems, therefore this circle calculator is featured with major measurement units conversion function to find the output values in different customary units such as inches (in), feet (ft), meters (m), centimeters (cm) & millimeters (mm) by using this below conversion table.

10 mm = 1 cm 100 mm = 3.93 in 1000 mm = 3.28 ft 1000 mm = 1 m |
1 cm = 10 mm 10 cm = 3.93 in 100 cm = 3.28 ft 100 cm = 1 m |
1 ft = 3048 mm 1 ft = 304.8 cm 1 ft = 12 in 10 ft = 3.048 m |
1 in = 25.4 mm 1 in = 2.54 cm 100 in = 8.33 ft 100 in = 2.54 m |

In the field of *area & volume calculations*, finding the diameter, circumference & area of circle is very important. The above formulas, step by step calculation & solved example may helpful for users to understand the how to perform such calculations manually, however, when it comes to online to perform quick calculations, this circle calculator may be useful to find the results.

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