选择题
2012 AMC 8 Problem 21: Painted Cube Faces
Marla has a large white cube that has an edge of 10 feet. She also has enough green paint to cover 300 square feet. Marla uses all the paint to create a white square centered on each face, surrounded by a green border. What is the area of one of the white squares, in square feet?
A.
5√2
B.
10
C.
10√2
D.
50
E.
50√2