Code an application that determines how many gallons of water is needed for a pool. Create Void Methods for the Header and Directions. Create 3 Value-Returning Methods that will return length, width, and height. Create another Value-Returning method that will accept 3 arguments (length, width, and height) and return the number of gallons needed. Use Math.Ceiling for the number of gallons. To calculate the gallons needed: 1 cubic foot of pool needs 7.5 gallons and declare as a constant.

C# program!