Nystrom, John W. (John William), 1824-1885 · Philadelphia, J.B. Lippincott · leaf 105
89. Icosahedron, r = 0-7558 s. £= 0-9510 s.a = 8-66025 s3.c = 2-18169 sa. r = Kadius of an inscribed Sphere.R = Radius of circumscribed Sphere.a = Area of the Polyhedrons.c = Cubic contents of the Polyhedrons.S = Side or edge of the Polyhedrons. 06 Planemetry. f —Wmm 90. Square. a = g* = U\ a =… … 91. Rectangle.a = a b9a = b J d*-b* 92. Triangle. —W-e^
Mechanical engineering · Engineering
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