posted by Katherine on .
there are 27 white cubes assembled to forma large cube.the outside surface of the large cube is painted red. the large cube is then separated into the 27 smaller cubes.how many of the small cubes will have red paint on exactly the following number of faces?
A= three faces
B= two faces
C= one face
D= no face
pick one ___________
3 * 3 * 3 = 27, so each side of the larger cube is 3 smaller cubes. Does that help you?
I will start you out with A. Those cubes in the corners will have 3 sides painted. How many corners does the large cube have?
It might help to try to draw the situation.