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.

The formula to find area is . We are given the length and the width from the problem, so we can plug those values into our equation and solve.

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

We have the perimeter and the width, so we can plug those values into our equation and solve for our unknown.

Subtract from both sides

Divide by both sides

The fence is going around the garden, so this is a perimeter problem.

We have the perimeter and the width, so we can plug those values into our equation and solve for our unknown.

Subtract from both sides

Divide by both sides

The fence is going around the garden, so this is a perimeter problem.

The formula to find area is . We are given the length and the width from the problem, so we can plug those values into our equation and solve.

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

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

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.

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.