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Round off to 3 significant figures: (i)20.96(ii)0.0003125 |
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Answer» Solution :(i)`20.96` has four SIGNIFICANT figures. The fourth significant FIGURE is more than 5 and hence on ROUNDING off to three significant figures, the given measurement will become `20.9+0.1"i.e.,"21.0.` (ii)`0.0003125` has four significant figures. The fourth isgnificant figure is 5 and hence on rounding off to three significant figures, the given measurement will become `0.000312 "or" 3.12xx10^(-4)`. This is because 2 before 5 is an even NUMBER. |
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