Which ancient Greek gave the first reasonable accurate statement of the size of earth
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Work each problem. The first accurate estimate of the distance around Earth was done by the Greek astronomer Eratosthenes $(276-195 \text { B.C.) },$ who noted that the noontime position of the sun at the summer solstice differed by $7^{\circ} 12^{\prime}$ from the city of Syene to the city of Alexandria. (See the figure.) The distance between these two cities is $496 \mathrm{mi}$ Use the arc length formula to estimate the radius of Earth. Then find the circumference of Earth. (FIGURE CANNOT COPY)
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Work each problem. Circumference of Earth The first accurate estimate of the distance around Earth was done by the Greek astronomer Eratosthenes $(276-195 \mathrm{B} . \mathrm{C} .),$ who noted that the noontime position of the sun at the summer solstice in the city of Syene differed by$7^{\circ} 12^{\prime}$ from its noontime position in the city of Alexandria. (See the figure.) The distance between these two cities is $496 \mathrm{mi}$. Use the arc length formula to estimate the radius of Earth. Then find the circumference of Earth. (FIGURE CAN'T COPY)
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Circumference of Earth The first accurate estimate of the distance around Earth was done by the Greek astronomer Eratosthenes $(276-195$ B.C. $),$ who noted that the noontime position of the sun at the summer solstice in the city of Syene differed by $7^{\circ} 12^{\prime}$ from its noontime position in the city of Alexandria. (See the figure on the next page.) The distance between these two cities is $496 \mathrm{mi}$. Use the arc length formula to estimate the radius of Earth. Then find the circumference of Earth.
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