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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中 
請大大幫幫忙求以下數學解答
Aug 11th 2013, 23:28

1.有一邊長20公分的正方體,厚度是1公分,水深11公分,在放入一個石塊後,水深為16公分,請問石塊的體積是多少立方公分?

2.想在一條長18公分,寬9公分,高8公分的蛋糕上塗滿奶油,請問塗奶油部分,面積是多少?

3.有一長13公分,寬6公分,高6公分的長方柱,請問此長方柱的表面積是多少?

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