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# How do you measure 720 mm with a 30 cm ruler?

Updated: 9/22/2023

Wiki User

11y ago

With considerable difficulty!

With a 30 cm ruler you can easily ascertain that the length is between 2 and 3 ruler-lengths: 600 mm and 900 mm. Maybe you can judge that the the remainder, after 600 mm is less than half of the 30 cm ruler. So that tells you that it is between 600 mm and 750 mm.

Wiki User

11y ago

Jacob DaLal

Lvl 2
3y ago

well i aint know

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Q: How do you measure 720 mm with a 30 cm ruler?
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### How can you measure a 650 mm ribbon with a 30 cm ruler?

1 cm = 10 mm. Start with ruler at 0 and mark ribbon at 30 cm. Then place ruler at the mark and measure 30 cm more and make another mark- you are up to 60 cm or 600 mm. Then place ruler at this mark and measure 5 cm, or 50 mm. Now you have a 650 mm ribbon.

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Why? Because A ruler of 30 cm is not enough for a bigger class! you need a meter ruler and multiply each ok.

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You could use either, it's just a little more work with the 30 cm ruler, but the result will be the same.You could use either, it's just a little more work with the 30 cm ruler, but the result will be the same.

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For a small ruler . There are 15 cm in 1 ruler. wheras a big ruler has 30 cm in a ruler.

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No, a metre stick is adequate, but a 12 inch or 30 cm ruler would be handier and possibly perfect.No, a metre stick is adequate, but a 12 inch or 30 cm ruler would be handier and possibly perfect.

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An ordinary ruler.

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