Answer:

2 cm is the right answer

Step-by-step explanation:

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Answer:

Answer - (b) 4cm

Step-by-step explanation:

Let the edge of the cube be x=2cm then

ATQ [ according to question ]

the 2 cubes are placed by side to form a cuboid

then length of cuboid = edge of two cubes

                                    = 2+2

                                    = 4

Therefore your Answer is 4 cm

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