Answer
38 in
Work Step by Step
given the length of the each piece = 6$\frac{1}{8}$ in = $\frac{49}{8}$ in
therefore total length of 6 pipes = 6 x$\frac{49}{8}$ in = $\frac{147}{4}$ in
Given thickness of each plate = $\frac{1}{4}$ in
therefore thickness of 5 plates = 5 x $\frac{1}{4}$ in = $\frac{5}{4}$ in
therefore the overall length of the assembly = $\frac{147}{4}$ in + $\frac{5}{4}$ in
= $\frac{152}{4}$ in = 38in