If a garden box has a perimeter of 27 and a half feet and the length is 9feet what is the area of the garden box

The formula for the perimeter of a rectangle is

P=2l*2w

plug in the data we know

27.5=2 (9) + 2w

27.5=18+2w

subtract 18 from both sides

9.5=2w

divide both sides by 2

4.25=w

The width of the box is 4.25feet

Now we can solve for the area. The formula for the area of a rectangle is

A=l*w

plug in the data we know

A=9*4.25

A=38.25ft²

Answer=38.25ft²