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If you include a row or column of 1, the answer is 4: 1 by 6, 2 by 3, 3 by 2, and 6 by 1.
about 6 million
6*sqrt(50) + 6*sqrt(2) = 6*sqrt(25*2) + 6*sqrt(2) = 6*sqrt(25)*sqrt(2) + 6*sqrt(2) = 6*5*sqrt(2) + 6*sqrt(2) = 30*sqrt(2) + 6*sqrt(2) = 32*sqrt(2)
2*√54 = 2*√9*√6 = 2*3*√6 = 6√6 ■
19.5833333333