12. Write O for the origin (0, 0, 0). Rewrite the set {P at |proj O? + proj} 551 = 5} using a single equation and cylindrical coordinates. What happens if we replace 0 with (0,0,47)? Recall that a justification means that you need to explain why the equation in cylindrical coordinates you provide gives the same set as the one above. 4 + 1 points