Question: 1.A surface profile consists of 10 triangular asperities having a constant flank angle and peak-to-valley heights of 1, 2, 3, 4, 5, 6, 7, 8,

1.A surface profile consists of 10 triangular asperities having a constant flank angle and peak-to-valley heights of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, see Figure 1. If all the valleys are an arbitrary datum, calculate (a) the position of the mean line relative to the datum and (b) the Ra value of the profile.

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