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Three metal cubes whose edges measure...

Three metal cubes whose edges measure `3c m ,\ 4c m\ a n d\ 5c m` respectively are melted to form a single cube. Find its edge. Also, find the surface area of the new cube.

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RD SHARMA ENGLISH-SURFACE AREA AND VOLUME OF A CUBOID AND CUBE-All Questions
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  11. A metallic sheet is of the rectangular shape with dimensions 48 c m...

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  12. How many planks each of which is 2m long, 2. 5\ c m\ broad and 4c ...

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  13. An agricultural field is in the form of a rectangle of length 20 m\...

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  14. A teak wood log is cut first in the form of a cuboid of length 2. 5...

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  16. A rectangular reservoir is 120 m long and 75\ m wide. At what sp...

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  17. A rectangular tank measuring 5m\ x\ 4. 5 m\ x\ 2. 1 m\ is dug in ...

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  18. A rectangular water reservoir is 10. 8 mb y3. 75 m at the base. Water ...

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  19. Water flows in a tank 150 m\ x\ 100 m\ at the base, through a p...

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  20. A rectangular tank is 225 m\ by 162 m at the base. With what sp...

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