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Home  >>  AIMS  >>  Class11  >>  Physics  >>  Units and Measurement
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Two rods are of lengths $3.161 \pm 0.3$ cm and $1.121 \pm 0.1$ cm. What is their combined length?

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$4.282 \pm 0.4$ cm
Hence (D) is the correct answer.
answered May 30, 2014 by thanvigandhi_1

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