Use the conversion ratio 1 foot equals 12 inches. A whiteboard is 7.5 feet long. How many inches long is the whiteboard? 90, 0.625, 6,900
To convert feet to inches, we multiply by the conversion ratio of 12 inches per foot.
So, 7.5 feet would be 7.5 x 12 = 90 inches long.
Therefore, the whiteboard is 90 inches long.