To determine the dose of a treatment to apply to his patient, a doctor at the Haitian State University Hospital (HUEH) must determine the volume of a tumor. To do this, he passes magnetic resonance imaging (MRI) to his patient and observes on the image a spot 12 mm long, 6 mm wide and 3 mm thick. Each distance is determined with an uncertainty of 12%. Assuming that the tumor occupies 65% of the volume of the parallelepiped having the above-mentioned dimensions, what is the volume of the tumor with its uncertainty? NB: The difference in volume of the tumor represents 85% of that of the parallelepiped