30 X 40 + 1200 sq/ft
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multiply 30 by 40 30X40 = 1,200 square feet == ==
9 square feet = 1 square yard Area of the floor = 12' x 30' = 360 square feet = 40 square yards
40*40 = 1600 square feet
40 square feet = ~3.72 m2
40 square feet are 3.716122 square meters.