Question: PLEASE ANSWER ALL THESE QUESTIONS WITH STEPS ASAP!!!!! 22. Given the points of a triangle; A(-1,3,5) B(2,1,3) and C(-1,1,4). Determine the area of the triangle.f21.

PLEASE ANSWER ALL THESE QUESTIONS WITH STEPS ASAP!!!!!

22. Given the points of a triangle; A(-1,3,5) B(2,1,3) and C(-1,1,4). Determine the area of the triangle.\f21. A plane is steering at $83'E at an air speed of 550 km/h. The wind is from N70'E at 85 km/h. Find the ground velocity of the plane to 1 decimal

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