MENSURATION OF SURFACES, SOLIDS, ETC.
Reading edition
Area of triangle = base X half the perpendicular height.
Area of circle = dia.2 X 0.7854.
Circum. of circle = dia. X 3.14159.
Circum. of circle X .31831 = the dia.
Dia. of circle X .8862 = the side of an equal square.
Side of a square X 1.12837 = the dia. of equal circle.
Square root of an area X 1.12837 = the dia. of equal circle.
Surface of cylinder = area of both ends + length X circum.
Surface of cone = area of base + 1/2 (slant height X circum. of base).
Surface of sphere = dia. squared X 3.14159.
Solidity of sphere = dia. cubed X .5236.
Solidity of cylinder = area of one end X length.
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