A) \[37c{{m}^{2}}\]
B) \[37.0\text{ }c{{m}^{2}}\]
C) \[37.03\text{ }c{{m}^{2}}\]
D) \[37.030\text{ }c{{m}^{2}}\]
Correct Answer: D
Solution :
Total Area \[={{A}_{1}}+{{A}_{2}}+......\text{ }{{A}_{7}}\] \[=A+A+.........7\] times \[=37.03{{m}^{2}}.\] Addition of 7 terms all having 2 terms beyond decimal, so final answer must have 2 terms beyond decimal (as per rules of significant digits.)
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