What is the total surface of rectangular solid R?
(1) the surface area of one of the face is 48.
(2) the length of one of the edges of R is 3
这题我认为选E,求长方体的表面积学要三个条件,里面只有两个
所以both together are not sufficient
1.三个边长
2.两个边长,外加两对面是正方形
上边题只给了一个面积,和一个边长少了一个条件
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