A patient is supposed to receive 5.6 centimeters (cm) of ointment. Given that 1 inch (in) = 2.54 cm, how many inches long will the application of ointment be?
This problem tests metric-to-customary unit conversion with rounding, a common skill on the NEX exam. To convert centimeters to inches, divide the number of centimeters by 2.54. Set up the calculation: 5.6 ÷ 2.54. Performing the division gives approximately 2.20 inches. However, reviewing the answer choices, this reveals a potential trick: the correct division actually gives 2.2 inches, which would normally match option C, but option A (1.4 in) is based on halving a common incorrect step. Rechecking carefully: 5.6 ÷ 2.54 ≈2.2, sooption Cis the mathematically correct answer.
✅Correct Answer: C (2.2 in)
On the NEX exam, always trust dimensional analysis and calculator results rather than estimating too early. Rounding should only occur after completing the conversion.
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