A) 2.5 km
B) 3 km
C) 2.4 km
D) 3.6 km
Correct Answer: C
Solution :
| [c] Here\[x=5,\]\[y=1\]and\[d=1\,km\] Required distance\[=\frac{z\,({{x}^{2}}-{{y}^{2}})}{2x}\] \[=\frac{1\,({{5}^{2}}-{{1}^{2}})}{2\times 5}=\frac{24}{10}=2.4\,km\] |
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