Root 2 as a continued fraction
J. H. Conway, R. K. Guy, The Book of Numbers, Copernicus, 1996The Book of Numbers
Trisecting an angle Trisecting an angle Squaring the circle Squaring the circle Doubling the cube Doubling the cube Squaring the circle Doubling the cube Trisecting the angle
circumference/diameter
Pi =circumference/diameter Circumference=pi x diameter Diameter=2 x radius Circumference =2 pi r For a unit diameter circle circumference = pi
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