IIT JEE 1983 Maths - 'Adapted' - FIB to Single-Digit Integer Q4

Geometry Level 4

The area of the triangle whose vertices are \(A(1, -1,2)\), \(B(2, 1,-1)\), \(C(3, -1,2)\) is \(A\) sq. units. Find \(\lfloor A\rfloor\).


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