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This diagram gives a visual analogue using a square: regardless of the size of the square, the added perimeter is the sum of the four blue arcs, a circle with the same radius as the offset. More formally, let c be the Earth's circumference, r its radius, Δc the added string length and Δr the added radius.
Ball-in-a-maze puzzle; Mechanical puzzle. Ball-in-a-maze puzzle; Burr puzzle; Word puzzle. Acrostic; Daughter in the box; Disentanglement puzzle; Edge-matching puzzle; Egg of Columbus; Eight queens puzzle; Einstein's Puzzle; Eternity puzzle; Fifteen puzzle; Fox, goose and bag of beans puzzle; Geomagic square; Globe puzzle; Graeco-Latin square ...
The equator is the circle that is equidistant from the North Pole and South Pole. It divides the Earth into the Northern Hemisphere and the Southern Hemisphere. Of the parallels or circles of latitude, it is the longest, and the only 'great circle' (a circle on the surface of the Earth, centered on Earth's center). All the other parallels are ...
SUDOKU. Play the USA TODAY Sudoku Game.. JUMBLE. Jumbles: VINYL GULCH RADISH OPAQUE. Answer: The pharaoh commissioned an artist to decorate his tomb. The result was — “HIRE-O-GLYPHICS”
Start with a circle of circumference 1 with a mark at 1. To generate the next wheel: Go around the wheel and find (the distance to) the first mark after 1; call it p. Create a new circle with p times the circumference of the current wheel. Roll the current wheel around the new circle, marking it where a mark touches it.
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The Arctic Circle is roughly 16,000 km (9,900 mi) long, as is the Antarctic Circle. [23] A "true circumnavigation" of Earth is defined, in order to account for the shape of Earth, to be about 2.5 times as long, including a crossing of the equator, at about 40,000 km (25,000 mi). [ 24 ]
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