标题: OG12TH-189 [打印本页] 作者: meckychen 时间: 2009-12-2 11:58 标题: OG12TH-189 The inside dimensions of a rectangular wooden box are 6 inches by 8 inches by 10 inches, A cylindrical canister is to be placed inside the box so that it stands upright when the closed box rests on one of its six faces. Of all such canisters that could be used, what is the radius, in inches, of the one that has maximum volumes?
A.3
B.4
C.5
D.6
E.8
答案是B，我不是很明白这题的意思。so that it stands upright when the closed box rests on one of its six faces.这句话什么意思啊？