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# VERY basic maths help needed! Watch

1. I feel so stupid for asking this! I'm blaming it on my tiredness at this time of the morning...

I just can't seem to work this out. Okay, so I need to find L^2 in meters. L is 400mm.

L = 0.4m, which squared is 0.16m.

L = 400mm, which squared is 160000mm = 160m NOT 0.16m!

Which is correct?! I feel very ashamed of myself right now haha. You know where you're so tired you can't remember how to spell the most basic words? I appear to feeling this with maths. Thanks for the help
2. Your problem is that your unit is m^2, not m. There's 1,000,000 mm^2 in a m^2.

Edit- to make it more clear L^2= 0.16m^2, L^2=160000mm^2=0.16m^2.
I feel so stupid for asking this! I'm blaming it on my tiredness at this time of the morning...

I just can't seem to work this out. Okay, so I need to find L^2 in meters. L is 400mm.

L = 0.4m, which squared is 0.16m.

L = 400mm, which squared is 160000mm = 160m NOT 0.16m!

Which is correct?! I feel very ashamed of myself right now haha. You know where you're so tired you can't remember how to spell the most basic words? I appear to feeling this with maths. Thanks for the help
It's because you've confused the units.

So

4. (Original post by Rob da Mop)
Your problem is that your unit is m^2, not m. There's 1,000,000 mm^2 in a m^2.
Of course. Bloody hell, I really am tired! Thanks a lot
5. (Original post by Noble.)
It's because you've confused the units.

So

Thank you I see now, and feel even more ashamed haha.
Thank you I see now, and feel even more ashamed haha.
Don't worry, it's an easy thing to overlook
7. Err...

That's what you'd class as 'very' basic? I have no idea wtf you are talking about, if that's basic, I'm screwed.
8. (Original post by ilickbatteries)
Err...

That's what you'd class as 'very' basic? I have no idea wtf you are talking about, if that's basic, I'm screwed.
Well it's not 2+2, but I'm doing a module in Engineering Mathematics for my degree, so I really should know this
9. (Original post by ilickbatteries)
Err...

That's what you'd class as 'very' basic? I have no idea wtf you are talking about, if that's basic, I'm screwed.
It's pretty easy you think about what a metre and a metre squared actually are.

1 square metre = 1 metre x 1 metre

1 metre = 1000 mm

so 1 square metre = 1000mm x 1000mm = 1 000 000mm

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