Since 10^2 pennies are 6.1 inches tall, we can find how tall are 10 pennies. 10^2=10*10=100, so 100 pennies are 6.1 inches tall, then 10 pennies are 6.1/10 inches tall, which is 0.61 inches. If 100 dimes are 5.3 inches tall, then 10 dimes are 5.3/10 or 0.53 inches tall. To find the difference, we can subtract the height of 10 dimes from 10 pennies, 0.61-0.53=0.08 inches.
