[問題]GWD02-16

[GuDon]

Q16:
Tanks A and B are each in the shape of a right circular cylinder. The interior of tank A has a height of 10 meters and a circumference of 8 meters, and the interior of tank B has a height of 8 meters and a circumference of 10 meters. The capacity of tank A is what percent of the capacity of tank B?

A. 75%
B. 80%
C. 100%
D. 120%
E. 125%

Answer: B

請問大大門這題是不是c阿 還是我又哪想錯嚕

[kwtluck]

圓周長=2*拍*半徑 =>半徑=圓周長/(2*拍)
A半徑=8/(2*拍)=4/拍
B半徑=10/(2*拍)=5/拍

圓面積*高=圓柱體積
A體積=(4/拍)^2*10
B體積=(5/拍)^2*8

題目求A體積=?%B體積
所以A體積/B體積=4/5=0.8=80%

** GuDon一起加油喔!!~**

[GuDon]

哈拍謝把圓周長當圓面積算了我
不好意思喔呵呵...