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** rectangle calculator** - step by step calculation, formulas & solved example problem to find the area, perimeter & diagonal length of a rectangle for the given input values of Length and Width in different measurement units between inches (in), feet (ft), meters (m), centimeters (cm) & millimeters (mm). In Geometry, rectangular is a flat shape with four straight sides, two of which are longer than the other two, and four angles of 90-degrees. This featured rectangle calculator uses different converter function in order to generate the Output in different measurement units. The rectangle 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 this rectangle calculator to find area, perimeter & diagonal length of a rectangle

The below solved example problem may be useful to understand how the values are being used in the mathematical formulas to find the area, perimeter & diagonal length of a rectangle.

**Example Problem :**

Find the area, perimeter & diagonal length of a rectangle having the length & width of 9 cm & 7 cm respectively?

**Solution :**

The given

length L = 9 cm

width W = 7 cm

**Step by step calculation**

formula to find area = Length x Width

substitute the values

= 9 x 7

= 63

formula to find perimeter= 2L + 2W

substitute the values

= (2 x 9) + (2 x 7)

= 32

formula to find diagonal length = √ (L^{2} + W^{2})

substitute the values

= √(9^{2} + 7^{2})

= √(81 + 49)

= 11.4018

The area, perimeter & diagonal length of a rectangle may required to be calculated in different measurement unit systems, therefore this rectangle 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 area, perimeter & diagonal length of a rectangle is important to understand basic mathematical computations. The above formulas, step by step calculation & solved example may helpful for users to understand the how to calculate rectangle's area, perimeter & diagonal manually, however, when it comes to online to perform quick calculations, this rectangle calculator may be useful to find the results.

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