A) \[20\,m\]
B) \[25\,m\]
C) \[30\,m\]
D) \[17\,m\]
Correct Answer: B
Solution :
Since \[\Delta ABC\] is right angled, \[A{{C}^{2}}=A{{B}^{2}}+B{{C}^{2}}\] \[\Rightarrow \] \[A{{C}^{2}}={{8}^{2}}+{{15}^{2}}=289\] \[\Rightarrow \] \[AC=\sqrt{289}=17\,m\] \[\therefore \] Actual length of tree \[=AB+AC=25m\]You need to login to perform this action.
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