The length of a rod is $(11.05 ± 0.05)\, cm$. What is the length of two rods ?
A$(22.1 ± 0.05)\, cm$
B$(22.1 ± 0.1)\, cm$
C$(22.10 ± 0.05)\, cm$
D$(22.10 ± 0.10)\, cm$
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D$(22.10 ± 0.10)\, cm$
d In the sum or difference of measurements we do not retain significant digits in those places after the decimal in which there were no significant digits in any one of the original values.
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