How is a board foot calculated?

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A board foot is a measurement of volume for lumber and is defined as the volume of a board that measures 1 foot long, 1 foot wide, and 1 inch thick. This means the correct choice accurately reflects the dimensions needed to calculate one board foot, specifically detailing that it is 1 inch thick, 12 inches wide, and 1 foot long. The use of these dimensions results in a measurement of 144 cubic inches, which corresponds to one board foot.

Understanding this, the other options present measurements that either don't conform to the standard or misrepresent the dimensions needed to achieve the correct volume. It’s essential to keep in mind that any other combination would yield a different volume and therefore cannot accurately represent one board foot.

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