A) 2 m
B) 18 m
C) 6 m
D) None of these
Correct Answer: C
Solution :
[c] Let PR be the Ladder and PQ be the wall in which Q is the base of the wall |
Also, \[PR=10\,m\]and \[PQ=8\,m\] |
In right \[\Delta PQR,\] \[P{{R}^{2}}=P{{Q}^{2}}+R{{Q}^{2}}\] |
\[\Rightarrow \,\,\,\,\,\,\,\,{{(10)}^{2}}={{(8)}^{2}}+R{{Q}^{2}}\] |
\[\Rightarrow \,\,\,\,\,\,\,\,R{{Q}^{2}}=100-64=36\Rightarrow RQ=6m\] |
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