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Math in Science

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A student measures the volume of a liquid and finds it to be 40mL. How many significant figures are in the measurement?

1 ***
2
3
4

Calculate the area, with the appropriate number of significant figures, of a rectangular room that is 14.10 m wide by 15.0 m long.
212 m^2***
211.5 m^2
29.1 m
29.10 m

Am I right or wrong?

  • Math in Science - ,

    I think you are right.
    Many may argue with the first one and suggest 40 has two s.f. To have two, however, it should be written as 40. where the . is not the end of the sentence. To avoid confusion many would write that as 4E1 to show the one s.f. and not two.

  • Math in Science - ,

    Ok but in all I'm right?

  • Math in Science - ,

    That's what I said, you are right.

  • Math in Science - ,

    So the answer is A or is it B

  • Math in Science - ,

    it is 212 m^2 i just took the quiz

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