My answers for questions 6 and 11 are wrong and for question 10 I need the answer for part B only. Thank you

Question 6, 12.4.15 > HW Score: 38.24 Homework: Sectl... Part1 cm 0 Points: 0 of1 Find the area of the triangle determined by the points P, Q, and R. Find a unit vector perpendicular to plane PQR. P(1,-1,-2), Q(-2,0,-1), R(0,-2,1) The area of the triangle is -. (Type an exact answer, using radicals as needed.) Question 10, 12.4.23 > HW Score: 38.24%, 6.5 of 1 Part 2 0f 2 @ Points: 0.5 of 1 Homework: Secti... Let u = 5i 2] + 2k, v = 12i + 4j 4k, w = 2] - 6k. Which vectors, if any are (a) perpendicular? (b) Parallel? (a) Which vectors are perpendicular? Select the correct choice below and ll in the answer box(es) within your choice. A- Vector is perpendicular to vectors . (Use a comma to separate answers as needed.) 5- The vectors are perpendicular. (Use a comma to separate answers as needed.) J" C. None of the vectors are perpendicular. (b) Which vectors are parallel? O A- D is one pair of parallel vectors. Another pair of parallel vectors is D. (Use a comma to separate answers as needed. '9 B- The parallel vectors are D. (Use a comma to separate answers as needed.) 0 C. None of the vectors are parallel. HW Score: 38.24%, 6.5 of 17 points Homework: Secti... Question 11. 12.4.25 0 Points: 0 0H _. Find the magnitude of the torque exerted by F on the bolt at P if IPQI =4 in. and |F| = 36 lb. The magnitude of the torque exerted by F on the bolt at P is ft-lb. (Do not round until the nal answer. Then round to two decimal places as needed.)