Quote:
Originally Posted by vermaden
For example, a 21" 4:3 has 218 square inches while 21" 16:9 widescreen has 211 square inches ...
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I think the difference is bigger than that. For a 21" diagonal I get:
4:3 has 211.68 sq in
16:9 has 188.44 sq in
Cute problem though, a square maximizes the area for a given diagonal rectangle.