classroom is 8 meters long, 6 meters wide, and 4 meters high. Now it is necessary to paint the surroundings and roof of the classroom, and the area of the doors and windows is 22 square meters. If 240 grams of paint is needed per square meter, how many kilograms of paint are needed in total? ．
一间教室长8米，宽6米，高4米，现在要粉刷教室的四周和屋顶，扣门窗面积22平方米．如果每平方米需用涂料240克，共需涂料多少千克？．
<result>33.12</result>