Question

Miss Palmer is placing a retaining wall around a garden. The coordinates of the vertices of the garden are (1,1), (1,5), (6,5), and (6,1). If each grade square has a length of 2 feet find the perimeter of the garden.

Answer 1

36 feet

Explanation:

First, find the perimeter of the garden in grade's units. Plot the vertices on the coordinate plane (see attached diagram). The picture shows that garden is rectangular. The perimeter of the garden is

`P=AB+BC+CD+AD=4+5+4+5=18\ un.`

If each grade square has a length of 2 feet, the perimeter of the garden is

`P_(actual)=18\cdot 2=36\ ft.`