A) \[5\text{ }l\text{ }and\text{ }l\]
B) \[5\text{ }l\text{ }and\text{ 3}l\]
C) \[\text{9 }l\text{ }and\text{ }l\]
D) \[\text{9}l\text{ }and\text{ 3}l\]
Correct Answer: C
Solution :
\[{{l}_{\max }}={{\left( \sqrt{{{l}_{1}}}+\sqrt{{{l}_{2}}} \right)}^{2}}=9l\]\[{{l}_{\min }}={{\left( \sqrt{{{l}_{1}}}-\sqrt{{{l}_{2}}} \right)}^{2}}=l\]You need to login to perform this action.
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