c++ The cube of a number, z, is given by zā¢Cā¢uā¢bā¢eā¢d=z3. Declare double variables z and zCubed. Then, read z from input and compute zCubed using the formula.
Ex: If the input is 3.80, then the output is:
54.87
Note: z3 can be computed using z * z * z.