Question

A square flower bed is 10 feet long on a side. How many plants are needed if they are spaced 6 inches apart around the outside of the bed?
With solution

Answer 1

Outer perimeter: 4s=4*10'=40'
Spacing = 6" = 0.5'/plant
Number required
= 40'/0.5'/plant
= 80 plants

Since the perimeter is a closed figure, there is no need to add one "at the end" as in the case of a linear row with two ends.