[题目讨论]OG 13 - 3.5 DI 第5题 题目讨论

cppiod

题目：
A closed cylindrical tank contains 36pi cubic feet of water and is filled to half its capacity. When the tank is placed upright on its circular base on level ground, the height of the water in the tank is 4 feet. When the tank is placed on its side on level ground, what is the height, in feet, of the surface of the water above ground?
A. 2
B. 3
C. 4
D. 6
E. 9

OG解答：
Since the tank is half full when placed upright then naturally it'll also be half full when placed on its side, so the level of the water will be half of the diameter, so r.
Now, given that V = pi squar(r)  .
Answer: B.

但是我总认为上面的H错了，应该是2, 而不应该是4.
具体解释在附件中。
不知是否有同学有同样的见解。

cppiod

难道没有人认为这道题的答案有问题么？

monicafish

有啊! 我跟你想法一样! 但找不到跟答案一样的合理解答啊! 你现在弄懂了吗

monicafish

我用google找了一下，发现题目错了，应该4feet而不2feet