埃拉托色尼（Eratosthenes）
埃拉托色尼（Eratosthenes）
Eratosthenes calculated the earth's circumference, giving it a circumference of about____miles, compared with the current equatorial circumference of about 24 902 miles. A: 18000 B: 25000 C: 20000 D: 27000
Eratosthenes calculated the earth's circumference, giving it a circumference of about____miles, compared with the current equatorial circumference of about 24 902 miles. A: 18000 B: 25000 C: 20000 D: 27000
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