A rectangular iron block has length 20 centimetres,breadth 10 centimetres and height 5 centimetres. It is melt and recast into a cube. What is the length of a side of this cube?
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Answer:
10 cm
Step-by-step explanation:
Volume of the rectangular iron block - 20×10×5 cubic cm
= 1000 cubic cm
Volume of the new cube =1000 cubic cm
Let the length of side of the cube be a cm
Therfore, a^3 = 1000 cm
Or, a = 10 cm
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