i have no idea how to solve these 2 questions.. please direct me to the right way.(adsbygoogle = window.adsbygoogle || []).push({});

1. Find the vector from the origin to the center of mass of a thin triangular plate (uniform density) whose vertices are A(7, 7, 2), B(7, 4, 6), and C(4, 10, 1).

2. Find the area of the parallelogram determined by the points P(7, -5, 5), Q(4, 7, -3), R(-2,6,-4) and S(-5,18,-12)

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# Vector from origin problem

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