A cube is built using 64 cubic blocks of side one unit. After it is built, one cubic block is removed

from every corner of the cube. The resulting surface area of the body (in square units) after the

removal is __________.

(A) 56 (B) 64 (C) 72 (D) 96

Now picture this...each corner block shows off three faces. When it is removed, three new faces are exposed, thus there appears no net change in the exposed surface area...

96 sq. units