Area of rectangles

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What is area?

Area is the amount of space taken up by a two-dimensional shape. You can measure the area of a shape by counting how many unit squares fit within it. A unit square has an area of one square unit.

This rectangle is covered by 15 unit squares.

So, the area of the rectangle is 15 square units.

Finding area by multiplying

You can also find the area of a rectangle by multiplying.

Each row has 5 unit squares. There are 3 rows of unit squares.

So, you can multiply

to find the area of the rectangle.

The area of the rectangle is 15 square units.

Area formula

You can find the area of any rectangle by multiplying the length times the width.

Area

length

width

Let's try it!

The length of this rectangle is 7 units. The width of this rectangle is 6 units.

Multiply the length by the width.

So, the area of the rectangle is 42 square units.

Try some practice problems!

Find the area of rectangles and squares

Skills

Tile a rectangle and find the area Create rectangles with a given area Find the area of rectangles and squares Find the area of rectangles: word problems

Videos(4)

Tile a rectangle and find the area

Create rectangles with a given area

Find the area of rectangles and squares

Find the area of rectangles: word problems

Lessons

Multiplying by 1-digit numbers

Area model multiplication

Area of compound shapes