Perimeter of a square (P) = 4s <em>where s is the side length of the square</em>
Since the fence is tangent (touching and perpendicular) to the patio, then the side length of the fence is the diameter of the circle. (See attachment)
Radius of circle = 18 ---> Diameter of circle = 2(18) = 36 ---> side length = 36
P = 4s
= 4(36)
= 144
NOTE: Whenever you have a word problem, ALWAYS draw a picture!
It will help you understand how to put together the information you are given in order to solve for the missing information.
To anser the question we would need to see the table that shows the number of days the elephant drinks water and the number of gallons this elephant drinks during that time.