Given the line AB = 84cm, M is the midpoint of AB, P is on MB, n is the midpoint of Pb, and Nb = 16cm. Find the length of PA Find the formula and the line segment

PA = 52cm. Because NB = 16cm, Pb = 32cm. Because m is the midpoint of AB, am = MB = 42cm, PM = 10cm,
And because PA = PM + am = 10cm + 42cm = 52cm

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