Answer: There is total length of the machinery after completing the assembling a piece of machinery with various parts is

Explanation:
Since we have given that
Number of parts = 2
Length of parts is given by

Number of parts = 3
Length of parts is given by

We need to complete assembling a piece of machinery with various parts.
According to question,

Hence, there is total length of the machinery after completing the assembling a piece of machinery with various parts is
