The equation of a sphere with radius r, centered at (x0 ,y0 ,z0 ) is
(x-x0 )+(y-y0 )+(z-z0 )=r2
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pr r^2
Surface area of a sphere with radius r = 4(pi)r2
There is NO equation for the area of a sphere Assuming you mean surface area, the surface area of a sphere of radius r is 4πr^2.
the volume of a sphere is 4/3 times pi times the radius of the sphere cubed. V=4/3 Pie r3
One might find the mathematical equation for the surface area of a sphere in a mathematics textbook. One might also find the equation at online math study groups.