Question:medium
The area of the triangle whose vertices are $A(1,-1,2)$, $B(2,1,-1)$ and $C(3,-1,2)$ is
The area of the triangle whose vertices are $A(1,-1,2)$, $B(2,1,-1)$ and $C(3,-1,2)$ is
Show Hint
Cross product magnitude directly gives twice the triangle area.
Updated On: Apr 30, 2026
- $\sqrt{7}$
- $\sqrt{11}$
- $\sqrt{13}$
- $\sqrt{15}$
- $\sqrt{10}$
Show Solution
The Correct Option is C
Solution and Explanation
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