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The concept that the Earth is round dates back to ancient times. Evidence supporting this idea includes observations of the Earth's shadow on the moon during an eclipse, the changing position of stars in the sky as one moves north or south, and the ability to see ships gradually disappear over the horizon.
18 feet.
5 feet
19 feet!
3/4 of the earth
"3 feet round" is not clearly defined: is that the radius, the diameter, or the circumference?
An eight-foot wide round table is 50.27 square feet.
round about 22.9658793
The circumference is 188 feet.
24 feet long.
About 17,950 gallons.