A) 10 km
B) 12 km
C) 13 km
D) 14 km
Correct Answer: A
Solution :
Route followed by Sonu |
\[AD=\sqrt{{{(AO)}^{2}}+{{(OD)}^{2}}}\] |
\[[AO=AB-CD=12-6=6\,km]\] |
\[=\sqrt{{{(6)}^{2}}+{{(8)}^{2}}}\] |
\[=\sqrt{36+64}\] |
\[=\sqrt{100}=10\,\,km\] |
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