19
(1)侧面积=3.14x12x55=2072.4(cm²)
长方体面积=12x12x2+12x16×12×4=1056(cm²)
底面积=3.14x(12÷2)²=113.04(cm²)
要涂漆的面积=2072.4+1056-113.04=3015.36(cm²)
3015.36cm²=0.301536m²
答:………….
(2)0.301536x30x50=452.304(元)
答:………….
猜你喜欢
- 1Sally usually( ) to school by car.But yesterday she ( ) to school by bus.
- 2类似于热脸对个冷屁股的这个意思的古诗词
- 3She's working here and I'm going to summer school.I'm studying English and I'm learning a lot.翻译
- 4F1,F2 是双曲线的焦点若双曲线右支存在P点满足|PF2|=|F1F2|且F1与圆x^2+y^2=a^2
- 5如图,⊙O是△ABC的外接圆,AB是⊙O的直径,D为⊙O上一点,OD⊥AC,垂足为E,连接BD (1)求证:BD平分∠ABC; (2)当∠ODB=30°时,求证:BC=OD.
- 6甲、乙二人从A、B两地同时出发,相向而行第一次在距B地30千米处相遇,两人到达两地后立即返回,第二次在距A地5千米处相遇,求两地之间的距离?
- 7英语翻译
- 8将规格分别为“220V,1000W”和“220V,500W”的甲、乙两根电阻丝串联起来,接入一电源两极,电源最大不能超过_____伏,此时,整个电路的最大功率是_____瓦.
- 9—Why is Marry unhappy?—Everyone went to the dance ________ she.
- 10没有经过商量而彼此见解行动一致的四字词语是什么?