CBSE Class 12 Mathematics 2026 Main Paper 65(B) · Q131 Marksparallelogram_area
CBSE Class 12 Mathematics 2026 Main Paper 65(B) · Question 13 (Vector Algebra)
Find the parallelogram area when its diagonals are (1,1,−2) and (1,−3,4).
✅ Step-by-Step Solution
Final Answer: √14
- Their cross product is (−2,−6,−4), with norm 2√14. The area is half that norm.
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