Hand with Reflecting Sphere was created in 1935.
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1935
One-Million-Liter Test Sphere was created in 1950.
Impoved Answer:-Surface area of a sphere: 4*pi*radius squaredVolume of a sphere: 4/3*pi*radius cubed
a circle has no face a sphere on the other hand does
The radius of a sphere is equal distance from the center of the sphere to all points within the sphere.