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算出大廳面積.8X4=32平方.再算出磚的面積.0.3X0.3=0.09平方.再用總面積除於磚的面積就能得出需要多少塊了,32除於0.09=355.555塊,再乘於6元/塊.355.5X6=2133元..
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