A) \[8\,km\]
B) \[5\,km\]
C) \[7\,km\]
D) \[10\,km\]
Correct Answer: B
Solution :
Shortcut: \[AC=\sqrt{C{{B}^{2}}+A{{B}^{2}}}\Rightarrow AC=\sqrt{{{4}^{2}}+{{3}^{2}}}\] \[AC=\sqrt{16+9}\Rightarrow AC=\sqrt{25}\Rightarrow AC=\mathbf{5}\]You need to login to perform this action.
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