a solid cube of side 3 cm is painted red on the outside is cut into 27 equal cubes.when alter 27 cubes are considered what is the difference between area that is not a red and area that is red?
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Answer: TSA of cube = 6 x (3)² = 54 cm² (which is painted red)
When divided into 27 equal parts, 1 square is of side 1 cm
∴ The new TSA is 6 x (1)² x 27 = 162 cm²
∴ The difference is 162 - 54 = 108 cm² (which is not red)
∴ The difference is 108 - 54 = 54 cm²
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Answer:
54 cm²
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