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Defining functions with default values for arguments.

Assignment: You are a software developer for a company that designs custom swimming pools. Write the definition of a function named waterVolumeNeeded that has three double parameters named length, width, and depth. The depth parameter should have a default value of $2\mathrm{.}0.$ The function should return the value of length $*$ width $*$ depth as a double.

Note: You will need to write the function definition according to the type specifications.