When we count the squares, there are squares that make up the rectangle.

The formula for area of a rectangle is length times width. The length of this rectangle is and the width is . .

Because multiplication does not change when the order is changed, you could set the length as and the width as . The answer is the same either way.

This problem asks us to calculate the amount of space that the wallpaper will cover. The amount of space that something covers can be described as its area. In this case area is calculated by using the formula

We can find the area by counting the squares within the rectangle. There are squares.

We can also multiply the length and the width to find the area.

*Area is the number of square units inside a shape, which is why area is always written with square units.

The formula for perimeter of a rectangle is

To solve for the perimeter we can plug our known values into the equation.

This problem asks us to calculate the amount of space that the wallpaper will cover. The amount of space that something covers can be described as its area. In this case area is calculated by using the formula

We can find the area by counting the squares within the rectangle. There are squares.

We can also multiply the length and the width to find the area.

*Area is the number of square units inside a shape, which is why area is always written with square units.

To find the area of the rectangle, multiply the longer side (8) and shorter side (3) together.

We can find the area by counting the squares within the rectangle. There are squares.

We can also multiply the length and the width to find the area.

*Area is the number of square units inside a shape, which is why area is always written with square units.

We can count the number of squares within the shape to find the area.

There are squares within the shape, which means the area is

*Area is the number of square units inside a shape, which is why area is always written with square units.