The length, breadth and height of 2 solid metal rods are 4 cm, 2 cm, 1 cm and 7 cm, 4 cm, 2 cm respectively. These are melted and combined to form a cube. What is the lenght of the cube?
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Answer:
Area of a cube = l x w x h
= (4+7)(2+4)(1+2)
= 11 x 6 x 3
= 198
Hence length is equal to 11
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