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Secondary V • 1yr.

Why is this 70 cm with sig figs? I thought it was supposed to be 73 cm... can someone help explain?


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Explanations (1)

  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

    Team Alloprof • 1yr.

    Hi !

    First, there is a link that I suggest you visit for the theory about significant figures :

    So let us put them in meters first. You will then have the operation as follow :

    $$ 7,5m-6,774m=0,726m=0,7m $$

    You can see now that the answer must have only one significant figure.

    If you have any other questions, feel free to ask them !

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