作业帮GMAT管卫东GWD 2套 数学部分第6题 求牛人给我讲解一下
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/05 05:47:08
GMAT管卫东GWD 2套 数学部分第6题 求牛人给我讲解一下
图是一个半圆 说是一个隧道的横截面那道 半圆的直径是20 正确答案是B 但是我觉得应该是A……
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.5½ ft
B.7½ ft
C.8 ½ ft
D.9½ ft
E.10 ft
图是一个半圆 说是一个隧道的横截面那道 半圆的直径是20 正确答案是B 但是我觉得应该是A……
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.5½ ft
B.7½ ft
C.8 ½ ft
D.9½ ft
E.10 ft
你怎么能算出5.5能 我很费解