Respuesta :

The pool and the no slip surface around it form a rectangle

with:

length = 15 ft + 3 ft + 3ft = 21 ft

width =  12 ft + 3 ft + 3ft = 18 ft


The perimeter of this rectangle is 21 ft +21 ft +18 ft +18 ft = 78 ft


Answer: 78 ft
Ver imagen eco92