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91 centimeters is equal to 35.8 inches.

Some common objects of similar size include:

1. A standard school ruler – approximately 30 cm (11.8 inches)
2. A standard door width – approximately 91 cm (35.8 inches)
3. An adult’s waist circumference – approximately 91 cm (35.8 inches)
4. The length of a football (American) – approximately 28 cm (11 inches)