A cube of lead with an edge 10metre is melted down and recast into a rectangular solid of square section .If height of square section is 40metre then find side of square section.
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Side of Square section = 5 m
Step-by-step explanation:
A cube of lead with an edge 10metre is melted down
=> volume of cube = 10³ = 1000 m³
rectangular solid of square section with height 40 m
Let say side of square section = a m
Volume = a² * 40
40a² = 1000
=> 4a² = 100
=> a² = 25
=> a = 5
Side of Square section = 5 m
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