calculate volume of rectangular water tank multiply Length, breadth and their height, as Volume = 2m × 1m × 0.5m = 1m3, 3) you get volume of water rectangular tank it can hold 1 cubic metre, multiply the answer by 1000 as 1×1000= 1000 liters, the result 1000 is rectangular water tank capacity in liters.
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1 cubic meter is 1000 liters.
There are 1,000 liters in a cubic meter, so you need to multiply the number of cubic meters by 1,000 to convert cubic meters to liters. Finishing this example, you would multiply 0.35 by 1,000 to find that the volume of the aquarium would be 350 liters.
1 cubic meter is 1000 liters. The simplest way to convert cubic meters to liters is to move the decimal point three places to the right. In other words, multiply a value in cubic meters by 1000 to get the answer in liters.