[問題]GWD2gmat-6

[sandyclub]

Q6:

The figure above shows the dimensions of a semicircular cross section of a one-way tunnel. The single traffic lane is 12 feet wide and is equidistant from the sides of the tunnel. If vehicles must clear the top of the tunnel by at least ½ foot when they are inside the traffic lane, what should be the limit on the height of vehicles that are allowed to use the tunnel?

A. 5 1/2; ft
B. 7 1/2; ft
C. 8 1/2; ft
D. 9 1/2; ft
E. 10 ft

答案是B。

我選A，我猜我沒看懂題意。請幫忙大大解惑！（SORRY圖不會貼）

[huacy]

這題出現很多次了 請參考下面連結
http://www.formosamba.com/phpBB3/viewtopic.php?t=1732

[sandyclub]

thank you thank you