+77 Ten unit cubes are glued together as shown. How many square units are in the surface area of the resulting solid?
+129850 The top layer of cubes shows ( 3 + 3 + 3 + 2) = 11 faces
The middle layer shows ( 4 + 4 + 2 + 2) = 12 faces
[ Note that the middle layer shows 8 faces on the front and back, 2 faces on the sides, plus 1 face each on the top and bottom
The bottom layer shows (3 + 3 + 3 + 2) = 11 faces
So...the surface area in square units is ( 11 + 12 + 11 ) = 34 units^2
