# Area of rectangles review

CCSS Math: 3.MD.C.7b
Review the basics of area of rectangles and try some practice problems.

## What is area?

Area is the space inside of a two-dimensional shape. We can also think of area as the amount of space a shape covers.
For example, the rectangle below has an area of $12$ square units because it covers $12$ square units.

## Area of a rectangle formula

To find the area of a rectangle, we multiply the length of the rectangle by the width of the rectangle.
$\text{Area of rectangle}=\text{length}\times\text{width}$
Want to know why this formula works? Check out this video.

### Example 1:

$\text{Area}=\text{length}\times\text{width}$
$\phantom{\text{Area}}=6\times2$
$\phantom{\text{Area}}=12\text{ square units}$

### Example 2:

$\text{Area}=\text{length}\times\text{width}$
$\phantom{\text{Area}}=7\times4$
$\phantom{\text{Area}}=28\text{ square units}$

### Practice set 1: Multiply to find area

Problem 1A
What is the area of the rectangle?
square units

Want to try some more area of rectangle problems? Check out this exercise:
Area of rectangles

### Practice set 2: Count square units to find area

Problem 2A
What is the area of the shape? Each square in the grid is a $1 \times 1$ unit square.
square units

### Practice set 3: Challenge items

Problem 3A
This cat and bird picture has an area of $56$ square centimeters. The height of the picture is $7$ centimeters.
What is the width of the picture?
centimeters