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10cm =1 dm therefore 10x30 =300cm =30dm

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16y ago

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How many lengths in a 25 meter pool is 2 km?

The same number of meters as on land......... But if you want to know how many lengths it is about 64 or 32 laps (there and back). 1 mile is 1609.344 meters. So you would have to go 64.37 laps in a 25M pool. 1609.344/25 meters.


How far will a car go in 15 seconds if it is traveling at 40 meters seconds north?

Time, t = 15 secondsVelocity, v= 40 meter per secondDistance. s= vt= 15* 40= 600metersThe car will go 600 meters.


What is 300 meters in miles?

There are 1609.344 meters in one mile. Therefore to convert meters to miles, value in meters has to be divided by amount of meters in one mile: 3000 meters = [meters] / 1609.344 = 3000 / 1609.344 = 1.8641 miles


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Do you multiply or divide to change millimeters to meters?

You divide the number of meters by 1000 to get distance in kilometers. You multiply the number of kilometers by 1000 to get the distance in meters. Generally, when converting from a large unit to a smaller one, you multiply. You divide when going from smaller to larger. However, conversion factors are often given that imply multiplication, no matter what direction you're going. For example, to convert from feet to inches, multiply by 12. To go from inches to feet, multiply by 0.0833 (which is 1/12, of course). In the metric system, it's more common: to go from kilometers to meters, multiply by 1000; to go from meters to kilometers, multiply by 0.001. Those who are good at math understand that multiplying by a fraction (a value less than one) is the same as dividing by its reciprocal.