50.98 centimeters is equivalent to 20.078 inches.
This is approximately the length of a standard adult-sized baseball bat (20 inches) or the width of a standard laptop screen (15-20 inches). It is slightly shorter than the width of a typical doorway (30-36 inches) or the waist of an average adult (about 32 inches). It is also slightly longer than the length of a regular-sized school ruler (12 inches).