Rectangle Calculator

The rectangle is one of the most common shapes in geometry. A rectangle has four sides, with opposite sides being equal in length, and all interior angles equal to 90°. This calculator allows you to quickly find important properties of a rectangle, including area, perimeter, and diagonal length.

Key Properties of a Rectangle

• Length (L): The longer side of the rectangle.
• Width (W): The shorter side of the rectangle.
• Perimeter (P): The total distance around the rectangle.
• Area (A): The space enclosed within the rectangle.
• Diagonal (D): The line connecting opposite corners of the rectangle.

Rectangle Formulas

To manually calculate the properties of a rectangle, use the following formulas:

• Area: A = L × W
• Perimeter: P = 2 × (L + W)
• Diagonal: D = √(L² + W²)

Step-by-Step Example

Suppose a rectangle has a length of 10 units and a width of 5 units. Using the formulas above:

How to Use the Rectangle Calculator

1. Enter the length of the rectangle.
2. Enter the width of the rectangle.
3. The calculator will automatically compute the area, perimeter, and diagonal.
4. Use the results to solve geometry problems, design layouts, or calculate material requirements.

Applications of Rectangle Calculations

Rectangle calculations are widely used in real life, including:

• Floor planning and construction projects.
• Determining fabric or material dimensions for crafting.
• Designing gardens, furniture, and interior spaces.
• Solving geometry and math problems in education.

Conclusion

The Rectangle Calculator is a powerful tool for quickly finding the essential properties of a rectangle. By entering the length and width, you can efficiently determine area, perimeter, and diagonal, saving time and reducing calculation errors.