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12. A cube of side 4 cm is cut into cubes of side 1 cm.Find the total surface area of all the small cubes.​

Answer»

Step-by-step explanation:

here vol³ of a CUBE= (4CM

= 64cm³

vol³ of smaller cube = (1cm)³

= 1cm³

total cubes OBTAINED= 64cm³/1cm³= 64

T.S.A of a smaller cube= 6a² = 6×(1cm)²= 6cm²

Now TSA of such 64 cubes= 64×6cm²= 384cm²



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