Final answer:
Mr. Mills' height of 5'11" is equivalent to 71 inches tall, calculated by converting feet to inches and adding the extra inches.
Step-by-step explanation:
Mr. Mills is 5'11 inches tall. To find out how many inches he is, we need to convert his height from feet and inches to just inches. There are 12 inches in a foot, so we multiply 5 feet by 12 inches per foot.
5 feet × 12 inches/foot = 60 inches
Next, we add the remaining 11 inches to the total we just calculated.
60 inches + 11 inches = 71 inches
Therefore, Mr. Mills is 71 inches tall.