Answer :
Final answer:
Among the given unit conversions, the most accurate is 1 fl oz = 30 ml. The others are incorrect as follows: 1 inch is 2.54 cm, not 5 cm; 60 lb is 27.216 kg, not 100 kg; and 1 tbsp is 14.7868 ml, not 4 ml.
Explanation:
The task is to examine the accuracy of several unit conversions provided. The given options are A. 1 fl oz = 30 ml, B. 1 inch = 5 cm, C. 60 lb = 100 kg, and D. 1 tbsp = 4 ml.
Using known conversion factors, let's evaluate each one:
- A. 1 fl oz = 30 ml: Correct. This is a commonly used approximate value, although the actual conversion is 1 fl oz = 29.5735 ml.
- B. 1 inch = 5 cm: Incorrect. The precise conversion factor is 1 inch = 2.54 cm.
- C. 60 lb = 100 kg: Incorrect. The exact conversion factor is 1 lb = 0.4536 kg. Using this, 60 lb = 27.216 kg.
- D. 1 tbsp = 4 ml: Incorrect. The precise conversion factor is 1 tbsp = 14.7868 ml.
Therefore, out of the provided conversions, choice A is the most accurate one.
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