A) 150 sq unit
B) 145 sq unit
C) \[\frac{\sqrt{155}}{2}\]sq unit
D) \[\frac{155}{2}\]sq unit
E) \[\frac{\sqrt{165}}{2}\]sq unit
Correct Answer: C
Solution :
The area of triangle whose vertices are (1, 2, 3),\[(2,5,-1)\]and\[(-1,1,2)\]is\[\frac{\sqrt{155}}{2}\]sq unit.You need to login to perform this action.
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