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Cake day: June 21st, 2023

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  • When using feet and inches, its fine to use precision of 1 inch as it’s much smaller unit than 0.1 m.

    If one says that they are 5’11" (180.34 cm), they can be 5’10.5" (179.07 cm) to 5’11.5" (181.61 cm) tall. That’s 1.4% variance.

    If using meters with one decimal place, and say they are 1.8 m (5’10.9"), they can be 175 cm (5’8.9") to 185 cm (6’0.8") tall. That’s 5.6% variance.

    Thus it’s not really viable to use only one decimal place when using metres as unit, so in many languages it’s easier to just say the length in centimeters compared to use two deeimal places.