Question: I need help with this question please, and please help me with all parts of the question. Find the area of the triangle determined by

I need help with this question please, and please help me with all parts of the question.

Find the area of the triangle determined by the points P, Q, and R. Find a unit vector perpendicular to plane PQR . P( 2,2, 1), Q( 1,0,2), R(0, 1, 2) - The area of the triangle is E. (Type an exact answer, using radicals as needed.)
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