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4. Columbus had a hard time convincing anyone to undertake the expense of financing a voyage to an unknown place. Based on the information available from other sailors and partly on his own ideas, Columbus underestimated the circumference of the Earth by twenty-one percent. The circumference of the Earth is 24,901 miles at the Equator. What was Columbus' estimate of the Earth's circumference? Round your answer to the nearest mile.

  • Math -

    0.79 * 24901 = ?

  • Math -

    19,671.79

  • Math -

    Yes. Rounded it's 19,672 miles.

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