What is the Formula for the Area of a Rectangle?

The length of the rectangle is 7 cm and the width is 4 cm
The rectangle will consist of individual units that have 1-cm sides
So we draw a grid inside the rectangle, with seven 1-cm columns and four 1-cm rows
Since each side of the individual units are 1 cm, the units will be cm² because they are squares
The rectangle has four rows of seven, which adds up to 28 square centimeters
All you need to do to find the area of the rectangle is multiply the long side (length) by the short side (width)!
So the area of the rectangle is 28 square centimeters

1. You first want to establish what area is
2. Area is simply how much space is inside the rectangle or how many square units are within the rectangle
3. The length of the rectangle is 7 cm and the width is 4 cm
1. Area is simply how much space is inside the rectangle or how many square units are within the rectangle
2. The length of the rectangle is 7 cm and the width is 4 cm
1. Draw a grid inside the rectangle, with seven 1-cm columns and four 1-cm rows
2. Since each side of the individual units are 1 cm, they are squares and the units will be cm²
1. This rectangle has four rows of seven, so if we add all of the individual squares up, we get 28 individual square units
2. Since units are in square centimeters, the area is 28 cm²
1. A = Length•Width = L•W
1. A = Length•Width = L•W
2. The longer side is the length and the shorter side is the width
3. So all you need to do to find the area of the rectangle is multiply the long side (length) by the short side (width)!
4. 7•4=28
5. So, again, the area comes out to be 28 cm²

What is the formula for the area of a rectangle? A = L•W