是Geometry部分46题: What is the volume of a certain rectangular solid? (1)Two adjacent faces of the solid have areas 15 and 24,respectively. (2)Each of two opposite faces of the solid has area 40. 答案为C,我就不不明白题中的adjacent faces 和opposite faces 分别指的长方体的哪几个面? 数中解释是说长宽高分别为l,w,h (1)只能得到lw=15,wh=24 (2)只能得到lh=40 但我以为(2)能够得到lw=40,wh=40,lh=40呢 请大家指点一下! |