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Video of mathematical physical examination process
Cuboid: surface area: (length× width+length× height+width× height) x2

Expressed in letters: 2(axb+axh+bxh)

Volume: length x width x height

Expressed in letters: abh cube: surface area: 6x side length 2

Expressed in letters: 6a^2

Volume: side length x side length x side length

Expressed in letters: a 3