AP EAMCET · Maths · Three Dimensional Geometry
If the vertices of are then the area of the (in sq. units) is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Given: A≡(2,3,5), B≡(-1,3,2), C≡(3,5,-2) Now, OA→=2i^+3j^+5k^ OB→=-i^+3j^+2k^ OC→=3i^+5j^-2k^ Now, AB→=OB→-OA→ =-3i^-3k^ Similarly, AC→=i^+2j^-7k^ Now, AB→×AC→=i^j^k^-30-312-7 =6i^-24j^-6k^…
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