AMC 8 2008 Problem 16
AMC8 2008 年第 16 题
立体几何★★★☆☆
A shape is created by joining seven unit cubes, as shown. What is the ratio of the volume in cubic units to the surface area in square units?
如图所示，把 7 个单位正方体连接形成如下的立体图形。那么这个立体图形的体积和表面积的比值是多少？
- A.$1:6$
- B.$7:36$
- C.$1:5$
- D.$7:30$
- E.$6:25$
正确答案 · Correct Answer
D
解析 · Solution
Solution 1
The volume is of seven unit cubes which is 7. The surface area is the same for each of the protruding cubes which is . The ratio of the volume to the surface area is: 7: 30.
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