A) \[\text{(}10\pm 1\text{)}m\]
B) \[\text{(}10\pm 0.1\text{)}m\]
C) \[\text{(}10\pm \sqrt{2}\text{)}m\]
D) \[10\pm \sqrt{2}%\]
Correct Answer: A
Solution :
[a] \[Area\text{ }=\text{ }{{\left( Length \right)}^{2}}\] \[or~~length\text{ }=\text{ }{{\left( Area \right)}^{1/2\text{ }}}=\text{ }{{\left( 100\text{ }\pm \text{ }2 \right)}^{1/2}}\] \[={{(100)}^{1/2}}\pm \frac{1}{2}\times 2=(10\pm 1)m\]
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