Question

A cube consists of twenty-seven 2×2×2-inch small cubes. All four of the corner cubes on the edge of the top layer fell off. Which statement is true about the surface area of the resulting solid?

1. It is 32 cubic inches less than the surface area of the original cube.
2. It is 32 square inches greater than the surface area of the original cube.
3. It is 32 square inches less than the surface area of the original cube.
4. It is the same as the surface area of the original cube.

Answer 1

The answer should be 4. Because in each cube you take from one corner,it seems like you lost 3 square shaped area but when you remove the cube, there occurs the hidden 3 square shaped area under that cube. So the surface area doesn't change. You should try to imagine the cube, it may help.

Answer 2

its the same surface area ad the orginal cube

Explanation:

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