would it be 900sq mm or 900 sq cm

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- anonymous

would it be 900sq mm or 900 sq cm

- chestercat

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- anonymous

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- anonymous

neither. you'll have either 60mm *150mm = 9000 mm^2 or 6cm *15cm = 90cm^2

- anonymous

to go from mm^2 to cm^2, you need to divide by 100 (and vice-versa)

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- anonymous

so... u dont multiply 150mm by 6cm? too get 900?

- anonymous

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- anonymous

- anonymous

unfortunately, you can't, since as you've noticed, you don't get a specific unit as an answer. Theoretically, you could write 900(mm*cm), but the correct approach is to convert both measures to the same unit.
It's like if you want to know how many feet you walked in one hour if you know you walk 3 miles an hour. You must convert one or the other before finding an answer

- anonymous

So none of the above?

- anonymous

90 square cm, if you convert 150 mm in cm (which will give 15 cm). 6cm * 15cm = 90 sq cm

- anonymous

oooh convert.... how did u convert it?

- anonymous

What about this one? how would I do this one?

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- anonymous

using this scale :
km hm dam m dm cm mm
<-/10 *10->
each conversion you do going left, you divide by 10. each you do going right, you multiply by ten. You can check on your ruler, you'll see that there are 10 mm in 1 cm.
However, this is only good if these measures are NOT squared. if they are, you change the 10 by 100 (and if it's cubic, then it's 1000 instead of 10)

- anonymous

would it be 72?

- anonymous

oh ok

- anonymous

yes, that's exactly it

- anonymous

yay i did it! :D

- anonymous

good job! :-)

- anonymous

Lol ty for the help i answered them all correctly.

- anonymous

my pleasure

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