1. The problem statement, all variables and given/known data Develop a formula for radius as a function of surface area for a cone with height three times its diameter. 2. Relevant equations ∏rs + ∏r^2 = SA s = √(h^2+r^2) H = 3d or 6r 3. The attempt at a solution Dont know what values to use for s = √(h^2+r^2).