How does one solve this problem?
( hurry)

5.99 feet.

Step-by-step explanation:

If the radius of the base of a right cylinder is r and its length is l, then the volume of the cylinder will be

Now, it is given that the volume(V) of the cylindrical tank is 2279.64 cubic feet and radius(r) of its base is 11 feet.

Therefore, the equation for getting the length(l) is

⇒ feet.

So, the length of the tank is 5.99 feet. (Answer)

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.