2020 AMC 10A Problem 10


Seven cubes, whose volumes are 11 , 88 , 2727 , 6464 , 125125 , 216216 , and 343343 cubic units, are stacked vertically to form a tower in which the volumes of the cubes decrease from bottom to top. Except for the bottom cube, the bottom face of each cube lies completely on top of the cube below it. What is the total surface area of the tower (including the bottom) in square units?

(A) 644(B) 658(C) 664(D) 720(E) 749\textbf{(A)}\ 644\qquad\textbf{(B)}\ 658\qquad\textbf{(C)}\ 664\qquad\textbf{(D)}\ 720\qquad\textbf{(E)}\ 749


Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.

Show/Hide Hints

Show/Hide Problem Tags

Problem Tags: Geometry

Want to contribute problems and receive full credit? Click here to add your problem!
Please report any issues to us in our Discord server
Go to previous contest problem (SHIFT + Left Arrow) Go to next contest problem (SHIFT + Right Arrow)
Category: AMC 10A
Points: 1
Back to practice