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Lesson 4: Multiply to find area

# Area of rectangles review

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.
start text, A, r, e, a, space, o, f, space, r, e, c, t, a, n, g, l, e, end text, equals, start text, l, e, n, g, t, h, end text, times, start text, w, i, d, t, h, end text
Want to know why this formula works? Check out this video.

### Example 1:

start text, A, r, e, a, end text, equals, start text, l, e, n, g, t, h, end text, times, start text, w, i, d, t, h, end text
empty space, equals, 6, times, 2
empty space, equals, 12, start text, space, s, q, u, a, r, e, space, u, n, i, t, s, end text

### Example 2:

start text, A, r, e, a, end text, equals, start text, l, e, n, g, t, h, end text, times, start text, w, i, d, t, h, end text
empty space, equals, 7, times, 4
empty space, equals, 28, start text, space, s, q, u, a, r, e, space, u, n, i, t, s, end text

### Practice set 1: Multiply to find area

Problem 1A
• Current
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
• Current
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
• Current
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