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What's more important is knowing the formulae for a sphere which are:- Volume of a sphere = 4/3*pi*radius3 Surface area of a sphere = 4*pi*radius2
The earth, which we live on, is approximately a sphere. It is important, therefore, to know spherical trigonometry.
to avoid the hassle plus costly litigation.
The radius of a sphere is equal distance from the center of the sphere to all points within the sphere.
Sphere is one syllable: sphere.