Q:
# What is a linear measurement?

**A linear measurement assigns a numerical value for the length of an object or between objects.** Units of linear measure include inch, foot, meter, kilometer and mile. Linear measurements have one dimension, whereas square measurements have two dimensions and cubic measurements have three.

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The foot and the meter represent the two standard units of measure. One foot equals 0.305 meter, and 1 meter is 3.28 feet. For much longer distances, 1 mile equals 5,280 feet and 1 kilometer is 1,000 meters. One mile is 1.61 kilometers and 1 kilometer equals 0.62 mile. Twelve inches equal 1 foot, and 1 inch is 2.54 centimeters.

Two linear measurements that enclose an area create a square measurement. The simplest square measurement is the area of a square. For example, a square with each side 3 feet long is 9 feet squared in area because the length is multiplied by the width for two dimensions.

When a third dimension is added to a square measurement, a cubic measurement results. A cube with 3 feet on each side encloses 27 cubic feet of space because the area measurement is multiplied by three to take into account the height. A cubic measurement multiplies three separate linear measurements including the length, width and height. In this way, linear measurements become volume measurements.

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