英语翻译1.The area of the faces of a rectangle box are 84平方厘米 70

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英语翻译
1.The area of the faces of a rectangle box are 84平方厘米 70平方厘米 and 30平方厘米（打不成.）.The volumn of the box is ____ cm3.
2.How long does it take the Earth to turn once its axis?

1）立方体三面面积分别为84、70、30,求体积?
ab=84 bc=70 ca =30 -》abc=sqrt(ab*bc*ca)=4200
2) 地球多久自转一周?
24 hours
(公转是365天,自转是1天)

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