Sphere, Cylinder & Cone Volume
Calculate the volume and surface area of a sphere, cylinder, cone or cube, free online.
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Volume formulas: sphere 4/3·πr³, cylinder πr²h, cone ⅓πr²h, cube a³. Surface areas: sphere 4πr², cylinder 2πr(r+h), cone πr(r+√(r²+h²)), cube 6a². For a cube, enter the edge length as the radius/size.