You calculate the following answer to a problem: 12.655 cm. You are asked to round your answer to four significant figures. Which answer is correct? A. 12.66 cm B. 12.65 cm C. 12.60 cm D. 12.70 cm
Counting from the left side, the first 4 digits are 1265.
Check to see if the last digit should be a 5 or a 6.
Since the next digit is a 5, round the previous 5 up to 6.
The correct answer is 12.66.
