Geometry: Area and Surface Area

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Some useful formulae for areas of three dimensional objects:
Cube: 6s%5E2, where s is side
Rectangular box: 2%28l%2Aw%2Bl%2Ah%2Bw%2Ah%29, where l, w, and h are length, width and height
Sphere: 4%2Api%2Ar%5E2, where r is radius of the sphere
Cylinder: 2pi%5Cr%5C%28h%2Br%29, where r is radius of the base and h is height

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