Elise built a rectangular vegetable garden that is 999 feet long and has an area of 72 square feet.
what is the perimeter of elise’s vegetable garden?

Perimeter of a rectangle=2(long)+2(width)

1)we calculate the width.
area=long x width

data:
area =72 ft².
long=9 ft

72 ft²=9 ft * width
width=72 ft²/9 ft=8 ft.

2) we calculate the perimeter.
perimeter=2(9 ft)+2(8 ft)=18 ft + 16 ft=34 ft.

the perimeter of Elise`s vegetable garden is 34 ft. 

Add up all the sides