Answer:
14
Explanation:
PE = ⅓(AE) = ⅓(21) = 7
AP = AE - PE
AP = 21 - 7 = 14
AP = 14
The centroid divides each median into segments in the ratio 2:1. AP is 2/3 of AE, so is ...
AP = (2/3)(21)
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