The total volume of two identical cubes is 128 cubic meter. What is the length of the edge of the cube?

Let the edge of each cube be a m.Volume of each cube=a3 m3So, total volume of the two cubes=a3 m3+a3 m3=2a3 m3By given condition, 2a3 m3=128 m3a3=64a=643a=2×2×2×2×2×23a=2×2a=4Thus, the edge of each cube is 4m

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