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A solid cube of side 12 cm is cut into 8 identicalcubes. What will be the side of the new cube?Also, find the ratio between the surface areaof the original cube and the total surface areaof all the small cubes formed.8. |
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Answer» Volume of old cube =a³⇒(12)³=1728 cm³No.of cubes =8Volume of old cube = 8* volume of 1 new cube1728=8*a³1728/8=a³12/2=a6 cm=aSurface area of old cube/ surface area of new cube=6*(12)²/6*(6)²=144/36=4/1=4:1 |
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