## ZyairaBoyd 3 years ago would it be 900sq mm or 900 sq cm

1. ZyairaBoyd

2. m_charron2

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

3. m_charron2

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

4. ZyairaBoyd

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

5. ZyairaBoyd

6. ZyairaBoyd

@m_charron2

7. m_charron2

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

8. ZyairaBoyd

So none of the above?

9. m_charron2

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

10. ZyairaBoyd

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

11. ZyairaBoyd

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

12. m_charron2

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)

13. ZyairaBoyd

would it be 72?

14. ZyairaBoyd

oh ok

15. m_charron2

yes, that's exactly it

16. ZyairaBoyd

yay i did it! :D

17. m_charron2

good job! :-)

18. ZyairaBoyd

Lol ty for the help i answered them all correctly.

19. m_charron2

my pleasure