No, it is not possible for a human hand to be 1 decimeter (10 centimeters) long. The average adult male hand length is usually around 18-20 centimeters, while the average adult female hand length is around 16-18 centimeters.
24 centimeters
It would be in centimeters because your hand is smaller than a ruler so that means it can be measured in centimeters
A skateboard is more likely to be 40 centimeters long rather than 40 meters long. Skateboards typically range from 70 to 84 centimeters in length, making 40 centimeters a plausible measurement. On the other hand, 40 meters would be an unusually long length for a skateboard and would not be practical for regular use.
30 centimeters
A hand is 10 (10.16) cm
As far as using a practical unit, centimeters would indeed be effective in measuring a hand.
1 hand = 10.16 cm
An adult's hand is typically around 7-9 centimeters wide.
10.16 cm
15 centimeters
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