Points P, Q, and R are located at ( 1, 4, 8), (2, 1, 3), and

Question:

Points P, Q, and R are located at (– 1, 4, 8), (2, – 1, 3), and (– 1, 2, 3), respectively. Determine:
(a) The distance between P and Q,
(b) The distance vector from P to R,
(c) The angle between QP and QR,
(d) The area of triangle PQR,
(e) The perimeter of triangle PQR.