Why are screen sizes (TVs, monitors, displays) given as a diagonal instead of the total surface area? - Quora
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LG 37LD340H: 37'' class (37.0'' measured diagonally) LCD Commercial Widescreen Integrated HDTV with HD-PPV Capability | LG USA Business
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LG 55LS675H: 55'' class (54.6'' measured diagonally) Pro:Centric™ Single Tuner™ Edge-Lit LED TV with Integrated Pro:Idiom® | LG USA Business
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