Volume of a cylinder = PI x radius^2 x Height
Replace the known information:
462,000 = 3.14 x 3.5^2 x height
Simplify:
462,000 = 3.14 x 12.25 x height
462,000 = 38.465 x height
Divide both sides by 38.465:
Height = 462,000 / 38.465
Height = 12,010.919 meters ( round answer as needed)