Final answer:
Option A is correct option. To subtract using significant figures, round your result to match the least precise measurement's decimal places. For this problem, 123.4567 cm - 22.00 cm should be rounded to two decimal places, resulting in 101.46 cm.
Step-by-step explanation:
The subject of the question is using significant figures in subtraction, which falls under the category of Mathematics. When subtracting numbers, the rule of significant figures is different from multiplication and division. Instead of looking at the number with the fewest significant figures, you must look at the decimal places and keep as many as the measurement with the least precision. In this case, we are subtracting 123.4567 cm, which has four decimal places, from 22.00 cm, which has two decimal places. Therefore, the result should have the same number of decimal places as the value with the least, which is two decimal places.
The accurate calculation is 123.4567 cm minus 22.00 cm. We perform the subtraction:
123.4567
- 22.00
________
101.4567
Now we round to two decimal places, as per the precision of 22.00 cm:
101.46 cm
In summary, the correct option with the proper use of significant figures is: 101.46 cm. Therefore, the correct answer is option A.