Round off to three significant figures (i) 9.745 g (ii) 9.835 cm (iii)

1.	Round off to three significant figures (i) 9.745 g (ii) 9.835 cm (iii) 28457 m.
Answer» Solution :a. Total mass `=2.3+0.02015+0.02017=2.34032=2.3kg` ( `:.` mass in the BOX has only TWO significant figures ) B. DIFFERENCE `=20.17-20.15=0.02g=0.020g`

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