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# How do you calculate volume in litres?

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### Quick Answer

To calculate volume in liters, measure the dimensions of the object in centimeters, calculate the volume in cubic centimeters, and convert the volume to liters. The project requires a metric ruler. A calculator reduces the time to complete the calculations and the chances of a math error.

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### Full Answer

1. Measure the object

Place the zero mark of a metric ruler on one edge of the object, and read the measurement. The major divisions are each 1 centimeter apart, and the minor divisions are 0.1 centimeter apart. If using a millimeter ruler, labeled 'mm' before the first major division, the major divisions are labeled in increments of 10 centimeters. Convert the measurement to centimeters before proceeding.

2. Calculate volume in cubic centimeters

Use the measurements to determine volume. Use the appropriate formula for the shape of the object. For a rectangular prism, area is the product of the length, width and height. For a cylinder, multiply the square of the radius by pi by the height. Use a pocket calculator to save time when multiplying decimal numbers.

3. Convert cubic centimeters to liters

There are 1,000 cubic centimeters in a liter. Multiply the volume of the object in cubic centimeters by the conversion factor 1 liter/1000 cubic centimeters. Label the final answer with the unit liters.

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