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(1.6m*1m)*2+(1.3m*1m)*2+1.6m*1.3m= 多少面积?
人气:254 ℃ 时间:2020-03-26 09:25:19
解答
(1.6m*1m)*2+(1.3m*1m)*2+1.6m*1.3m=6.33
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