The dimensions，in centimeters，of rectangular box R are 6 by 8 by 10．Which of the following CANNOT be the total surface area，in square centimeters，of two faces of R（）

单项选择题If a solid pyramid has 4 vertices and4 faces，how many edges does the pyramid have（）

A. 2
B. 3
C. 4
D. 6
E. 8

单项选择题If the perimeter of the rectangle above is36，then l=（）

A. 9
B. 14
C. 16
D. 28
E. 32