78 centimeters is equivalent to 30.708 inches.
Comparison to known objects:
1. An average human forearm measures about 30 inches, so 78 centimeters is slightly longer than a human forearm.
2. A standard school ruler is 30 centimeters long, meaning that 78 centimeters is approximately 2.6 times the length of a ruler.
3. The height of a regular soda can is about 12 centimeters, so 78 centimeters is almost 6.5 times the height of a can.
4. The diameter of a basketball hoop is 46 centimeters, so 78 centimeters is about 1.7 times the diameter of a basketball hoop.