Maths year 11
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Original post by gdunne42
You don't know that there are 100 cm in a m?
or 1000 m in 1 km?
So 100 x 1000 cm in a km
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or 1000 m in 1 km?
So 100 x 1000 cm in a km
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Thank you so much and no I don't.
Can you list them all please so I cam memorise them?
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Original post by z_o_e
Thank you so much and no I don't.
Can you list them all please so I cam memorise them?
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Can you list them all please so I cam memorise them?
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https://en.wikipedia.org/wiki/Unit_prefix
Original post by 34908seikj
Copper- 89.62 g/cm^3 - 14700 / 164
Air - 15.38 m^3 - 20kg * 0.0013g/cm^3 then I just converted it into M^3, however it's probably easier to convert the 0.0013g/cm^3 in m^3 first.
Edit: I did hydrogen wrong.
Air - 15.38 m^3 - 20kg * 0.0013g/cm^3 then I just converted it into M^3, however it's probably easier to convert the 0.0013g/cm^3 in m^3 first.
Edit: I did hydrogen wrong.
I need to learn the method for this :/
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Original post by z_o_e
1km doesn't equal 100cm
Think about it like this.
There are 1000 meters in a Kilometre
And there is 100cm in 1 meter.
Therefore there is 1000*100 cm in one km
Which is 100000cm
Now you want 1km^3
1km^3 is 1km * 1km *1km
So we can deduce that 1km^3 = 100000^3cm
Which can be wrote as 1 * 10^15 cm^3
or 1000000000000000cm^3
(edited 7 years ago)
Original post by 34908seikj
1km doesn't equal 100cm
Think about it like this.
There are 1000 meters in a Kilometre
And there is 100cm in 1 meter.
Therefore there is 1000*100 cm in one km
Which is 100000cm
Now you want 1km^3
1km^3 is 1km * 1km *1km
So we can deduce that 1km^3 = 100000^3cm
Which can be wrote as 1 * 10^15 cm^3
or 1000000000000000cm^3
Think about it like this.
There are 1000 meters in a Kilometre
And there is 100cm in 1 meter.
Therefore there is 1000*100 cm in one km
Which is 100000cm
Now you want 1km^3
1km^3 is 1km * 1km *1km
So we can deduce that 1km^3 = 100000^3cm
Which can be wrote as 1 * 10^15 cm^3
or 1000000000000000cm^3
How's this?
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Original post by z_o_e
I changed it to cm3
And got this
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Original post by z_o_e
eh you're off by a few 0's
It's more in the realm of:
900 000 000kg
Original post by z_o_e
That's correct. Your unit of measurement is grams by the way.
Original post by 34908seikj
That's correct. Your unit of measurement is grams by the way.
Yaaayx
This is the second question
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Original post by z_o_e
Looks correct - On phone (walking dog lol) so I can't actually confirm it's right though.
Original post by 34908seikj
Looks correct - On phone (walking dog lol) so I can't actually confirm it's right though.
Oh ha ha. Tried this. This seems incorrect.
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Original post by z_o_e
'Tis correct.
Original post by 34908seikj
'Tis correct.
Thank you so much ♥ Posted from TSR Mobile
Original post by 34908seikj
'Tis correct.
How did I do these?
Also how do I do the last rocket question
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Original post by z_o_e
I'll do the rocket question in a more visible colour.
For the 10^1/10^-4 , while I didn't do it this say, since I think it's easier to understand by writing it out, for demonstration purposes. You can think of it as 10^1-(-4) = 10^5
Original post by 34908seikj
I'll do the rocket question in a more visible colour.
For the 10^1/10^-4 , while I didn't do it this say, since I think it's easier to understand by writing it out, for demonstration purposes. You can think of it as 10^1-(-4) = 10^5
For the 10^1/10^-4 , while I didn't do it this say, since I think it's easier to understand by writing it out, for demonstration purposes. You can think of it as 10^1-(-4) = 10^5
Got it!! I got 71% on that work!!
Now this...
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Original post by z_o_e
Volume = area of cross section x length.
So cylinders have volume, where h is the length.
I got the top ones. I think they are right. What about these?
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