One way to check if the volume is correct is by using the units of measurement. Since volume is usually measured in cubic units (such as cubic inches, cubic feet, cubic meters, etc.), we can verify if the volume of 7/8 cubic units is reasonable based on the units of the rectangular prism.
If the edge lengths of the right rectangular prism are in inches, for example, and the volume is given in cubic inches, then it is reasonable to consider that the calculation using the edge lengths resulted in a volume of 7/8 cubic inches. Similarly, if the edge lengths are in feet and the volume is in cubic feet, the resulting calculation should also yield a volume in cubic feet.
Therefore, by checking the units of measurement, we can verify that the volume obtained by multiplying the edge lengths of the right rectangular prism is correct.
One student multiplies the edge links of the right rectangular cribs to get the volume of 7/8 cubic. Units is one way to check that the volume is correct.
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