A backyard covers 225 square feet. If the lenght of the backyard is 15ft,what is the perimeter of the backyard.

well, 15*15 = 225, so ...

To find the perimeter of the backyard, we need to know the width of the backyard. The area of a rectangle is given by the formula:

Area = Length * Width

In this case, the area is 225 square feet and the length is given as 15 feet. Therefore, we can rearrange the formula to solve for the width:

Width = Area / Length

Width = 225 sq ft / 15 ft

Width = 15 ft

Now that we know both the length and width of the backyard, we can calculate the perimeter. The perimeter of a rectangle is given by the formula:

Perimeter = 2 * (Length + Width)

Substituting the given values, we have:

Perimeter = 2 * (15 ft + 15 ft)

Perimeter = 2 * 30 ft

Perimeter = 60 ft

Therefore, the perimeter of the backyard is 60 feet.