20.5 centimeters = 8.07 inches
Comparisons:
1. An average adult’s hand length (from wrist to middle finger tip) is approximately 7-8 inches.
2. The length of a DVD case is typically around 7.5 inches.
3. The average length of a dollar bill is 6.14 inches.
4. The height of an iPhone 12 is 5.78 inches.
5. The length of a credit card is 3.37 inches.