一个圆柱形油桶,底面周长12.56dm高是15dm,里面装有三分之二的汽油,已知每升汽油4.72元,要想装满还需
人气:374 ℃ 时间:2020-05-27 01:15:08
解答
12.56x15x(1-2/3)=62.8L 62.8x4.72= 296.416 元
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