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Simplify (0.09)2 and give your answer correct to 4 significant figures

Simplify (0.09)2 and give your answer correct to 4 significant figures
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  • A 0.81
  • B 0.081
  • C 0.0081
  • D 8.0001
Correct Answer: Option C
Explanation:
(0.09)2 = 0.09 × 0.09
= 0.0081
= 0.008100 to 4 significant figures
Please, start counting first from the non-zero digits i.e. 8

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