选择题
2000 AMC 8 Problem 22: Cube Surface Area Increase
A cube has edge length 2. Suppose that we glue a cube of edge length 1 on top of the big cube so that one of its faces rests entirely on the top face of the larger cube. The percent increase in the surface area from the original cube to the new solid formed is closest to
A.
10
B.
15
C.
17
D.
21
E.
25