To convert feet to inches, you can use the fact that 1 foot is equal to 12 inches. Therefore, to convert 10 feet to inches, you multiply the number of feet by the conversion factor of inches per foot.
Let's analyze the options:
A. Converting feet to inches by multiplying 10 feet by 12.
This is incorrect because it does not have the correct units. You should multiply by a conversion factor with units to get the correct result.
B. Converting feet to inches by dividing 10 feet by 12 inches / 1 foot.
This is incorrect as well because the operation of dividing by a conversion factor like this is not meaningful in terms of converting the measurement.
C. Converting feet to inches by multiplying 11 feet by 1 foot / 12 inches.
This is incorrect because it inaccurately starts with 11 feet instead of 10 feet, and the multiplication does not give the correct result.
D. Converting feet to inches by multiplying 10 feet by 12 inches / 1 foot.
This option is the correct method because it uses the conversion factor appropriately. Specifically:
\[ 10 \text{ feet} \times \frac{12 \text{ inches}}{1 \text{ foot}} = 120 \text{ inches} \]
Thus, the best choice for converting 10 feet to inches is option D.
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