Q.7: The shown figure demonstrates the graph produced for a workpiece surface in order to evaluate its surface roughnes. off is 0.8 mm. The horizontal and vertical magnifications are 20 and 2000, respectively. Evaluate the average peak to valley, R, parameter in um? Show how you got this value on the graph? v Evaluate the maximum peak to valley, R" parameter in μm? Show how you got this value on the graph? Reference line Q.7: The shown figure demonstrates the graph produced for a workpiece surface in order to evaluate its surface roughnes. off is 0.8 mm. The horizontal and vertical magnifications are 20 and 2000, respectively. Evaluate the average peak to valley, R, parameter in um? Show how you got this value on the graph? v Evaluate the maximum peak to valley, R" parameter in μm? Show how you got this value on the graph? Reference line