Area of Rectangle
Area = length × width
The area of a rectangle can be found by multiplying its dimensions, length and width.
An expression for the area of the given rectangle in square feet is 21 × 7.
Use the formula for the area of a rectangle.
Area | = | length × width |
| = | 10 feet × 4 feet |
| = | 40 square feet |
The area of the rectangle is 40 square feet.