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Define the following methods:

calculateBaseArea$()$ has two double parameters as a pyramid's base length and base width. The method returns the area of

the pyramid's base as a double. The area of the base is calculated by: Area $=$ base length $**$ base width

calculateVolume$()$ has three double parameters as a pyramid's base length, base width, and height. The method returns the

pyramid's volume as a double, and uses the calculateBaseArea$()$ method to calculate the pyramid's base area. The volume

is calculated by: Volume $=$ base area $**$ height $**\frac{1\mathrm{.}0}{3\mathrm{.}0}$

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