A treatise on special or elementary geometry (1877)
Olney, Edward, 1827-1887, Olney, Edward, 1827-1887. Elements of trigonometry, plane and spherical · New York : Sheldon · leaf 416
s of observation N and N is 92° 14,and the radius of the earth is 8956.2 miles; find the distance to themoon. Distance = 237,954.098 miles. • The equatorial radinp of the earth is 3962.8 miles; but in consequence of the flattening inthe direction of the polar diameter it is less here. / PRACTICAL… … DC = 587.61 yards 5. Find the area of a regular hexagon, and also of a regularoctagon, whose sides are each 10 feet. Areas, 259.8, and 482.84 square feet 6. Find the area of a regular pentagon, and also of a regular dec-agon, whose sides are each 12 feet. Areas, 247.74, and 1107.96 square feet. 7…
Geometry · Trigonometry
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