Find the volume of a rectangle of a parallelepiped whose dimensions are 4m. 5m. 7m.

Let’s paraphrase the task from the original – Find the volume of a rectangular parallelepiped length, width and height: 4m, 5m, 7m.
Vpr. Steam = a * b * c = 4 * 5 * 7 = 140 m3

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