A cube has an edge of 2 cm. Its surface is painted, and it is then cut into 8 equal cubes with an edge of 1 cm. What is the total painted area of all the small cubes?
Answer and explanation
Correct answer: C. 24 square cm
- Step 1: Each small cube has three painted faces of 1 square cm. Step 2. 8 cubes x 3 = 24 square cm, which equals the 6 faces of 4 square cm on the original cube. Answer: 24 square cm. Why not the others: these values count the wrong number of faces.
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