Area of a Rectangle Calculator

Use this calculator to find the area of a rectangle when you know its width and length. Area tells you how much space the rectangle covers (in square units).

In the diagram, the width is w and the length is l.

Step-by-step method

1. Identify what is given.
2. Write the formula.
3. Substitute the values and calculate the area.

Formula:

Example 1: w = 4, l = 6

Step 1 - Identify what is given.

In this problem: The given dimensions are w = 4 and l = 6.

Step 2 - Write the formula.

In this problem: Use the rectangle area formula: A = wl.

Step 3 - Substitute the values and calculate the area.

In this problem: Substitute w = 4 and l = 6: A = 4 × 6 = 24.

Final answer: A = 24

Example 2: w = 3.5, l = 2

Step 1 - Identify what is given.

In this problem: The given dimensions are w = 3.5 and l = 2.

Step 2 - Write the formula.

In this problem: Use the rectangle area formula: A = wl.

Step 3 - Substitute the values and calculate the area.

In this problem: Substitute w = 3.5 and l = 2: A = 3.5 × 2 = 7.

Final answer: A = 7