Answer:
36 feet
Step-by-step explanation:
Let us first find the area of the of the flower bed. It is a rectangle, so:
A = 18 * 4.5 = 81 square feet
The square flower bed has the same area, therefore, the length of the sides of the flower bed can be gotten. The area of a square is:
[tex]A = L^2[/tex]
[tex]81 = L^2\\\\L = \sqrt{81}[/tex]
L = 9 feet
Next, we need to find the perimeter of the square flower bed:
P = 4L
=> P = 4 * 9 = 36 feet
He needed 36 feet of fence to enclose the entire square flower bed.
