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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: significant figures
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jos (0)

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The volume of a sphere is 1.76 cm3. The volume of 25 such spheres taking into account the significant  figure is?



  1. 0.44  x  102 cm3

  2. 44.0 cm3

  3. 44 cm3

  4. 44.00 cm3


Pls explain ur answer!!

    
mastermind890 (324)

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2.44.0 cm3

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allamraju (3410)

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I think the ans is 44.0cm3.Since the volume given has 3 significant figures,the ans also must have 3 significant figures.

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jos (0)

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But considering the operation 1.76 x 25, 25 has the least no: of significant digits (2), so why can't the answer be 44 cubic cm?
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mastermind890 (324)

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@jos

good thinking dude!!!!!!!!

but what i think is that ur concept is valid when operating on phyysical quantities

becoz 25 spheres means 25 spheres...writing 25.0 spheres does not make any difference


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zorro (106)

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but I think answer should be 44.00 cm^3

see if we treat it like this

1.76 + 1.76 + 1.76-------------------upto 25 times

then answer should be 44.00 cm^3

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