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Two cuboids of dimension 2×3×4 units and 2×5×4 units are melted and a single cube is made. What is the side of the cube in units?
Question

Two cuboids of dimension 2×3×4 units and 2×5×4 units are melted and a single cube is made. What is the side of the cube in units?

A.

3.5

B.

3.0

C.

4.0

D.

2.5

Correct option is C

Volume of cuboid = l×b×h

Volume of cube = a3a^3​​

Volume of Initial Figure = Volume of Final Figure

2×3×4 +  2×5×4 = a3a^3​​

24 + 40 = a3a^3​​​

a= 4 unit

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