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51" by 25" = 51*25 = 1275 sq inches = 1275/(12*12) sq ft = 8.854 sq ft (to 3 dp)
sq. root of 75 = sq. root of (25 x 3) = (sq. root of 25)(sq. root of 3) = 5(sq. root of 3)
3125 sq ft.
25 ft * 12 ft = 300 sq ft = 0.092903*300 sq metres = 27.871 sq metres (to 3 dp)
1 sq = 1. 2 sq = 4. 3 sq = 9. 4sq = 16. 5sq = 25. 6sq = 36. 7sq = 49. 8sq = 64. 9sq = 81. 10 sq = 100. 11 sq = 121. 12 sq = 144.