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Question

A cuboid of length 10cm and breadth 5 cm is melted and cast into identical cubes of side 2cm. What would have been the height of the cuboid if the number of cubes cast = 50.



A

7 cm

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B

10 cm

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C

8 cm

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D

4 cm

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Solution

The correct option is D

8 cm


Let the height of the cuboid be h

Volume of cuboid = 50  × Volume of cubes.

=10×5×h=50×2×2×2

h=50×2×2×2/10×/5

 h = 8 cm

Height of the cuboid = 8cm


Mathematics

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