A workshop makes five cylindrical ventilation pipes with a radius of 0.6 meters and a height of 20 meters, and coats them with antirust paint. Calculated on the basis of 0.3 kilograms of antirust paint per square meter, how many kilograms of antirust paint should be used in total? (reserve one decimal place by rounding up)
某车间制作5个半径为0.6米、高20米的圆柱形通风管，并在它的外表涂上防锈漆．按每平方米用防锈漆0.3千克计算，一共要用防锈漆多少千克？(用进一法保留一位小数)
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