Assume that the surface roughness profile is triangular

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Assume that the surface roughness profile is triangular as shown schematically in the figure. If the peak to valley height is 20 μ m, the central line average surface roughness R₀ (in μ m) is

1. 5
2. 6.67
3. 10
4. 20

Correct Option: A

R_a =	h_max	=	20	= 5μm.
	4		4