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Which is the more reasonable measurement of the diameter of a blood cell: 7.4 ⋅ 10−3 mm or 7.4 ⋅ 103 mm? Justify your answer.

User Nfgl
by
7.9k points

2 Answers

5 votes
I think that it is the first one because it is smaller


hope this helped!!
User Poldo
by
9.1k points
3 votes

Answer:


7.4* 10^(-3)\ mm

Explanation:

Actual measurement of diameter of a blood cell is 6 to 8 μm

Let diameter be d


1\mu m=10^(-6)\ m


6* 10^(-6)\ m\leq d\leq 8* 10^(-6)\ m

Now we check the given measurement between the range.


  • 7.4* 10^(-3)\ mm

Change into meter. As we know 1000 mm = 1 m or 1 mm = 10⁻³ m


7.4* 10^(-3)* 10^(-3)\ m


7.4* 10^(-6)\ m


  • 7.4* 10^(3)\ mm


7.4* 10^(3)* 10^(-3)\ m


7.4\ m

So,
7.4* 10^(-6)\ m lie between
6* 10^(-6)\ m\leq d\leq 8* 10^(-6)\ m

Hence,
7.4* 10^(-6)\ m more reasonable measurement of diameter of blood cell because it lies between range of diameter of blood cell.

User Eric Christensen
by
8.5k points
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