Answer:
Length of the fence = 40 ft
Step-by-step explanation:
As the yard for the pet is square shaped with area 100 sq. ft, length of each side is given by
[tex]\sf side =\sqrt{area}\\\\ side = \sqrt{100}[/tex]
= 10 ft
Perimeter:
Perimeter of square = 4 *side
= 4 * 10
= 40 ft
