Question: Let P = (0, 1, 0), Q = (1, -1, -1), R = (-2, 1, 1). Find (a) The area of the triangle PQR. (b)

Let P = (0, 1, 0), Q = (1, -1, -1),

Let P = (0, 1, 0), Q = (1, -1, -1), R = (-2, 1, 1). Find (a) The area of the triangle PQR. (b) The equation for a plane that contains P. Q, and R. This plane is

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