Hello!
The formula for the perimeter of a rectangle is:
A = 2l * 2w
Since we already have the width, we must multiply that by two (because there are two pairs of equal sides in a rectangle) and subtract that from the perimeter to find the length.
4 + 4 = 8
26 - 8 = 18
18/2 = 9
So, the length of Lisa's flower garden is 9 ft.
