A water tank is made by combining a cylinder and a hemisphere If the radius of its base is 1.05m and it contains 12820.5 litres o water, what is the height of the tank?

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *