Oil is stored in a cylindrical tank with a height h = 10 m. At a temperature t0 = -10°C, the oil level does not reach the upper edge of the tank by dh = 50 cm. At what temperature t will oil begin to pour out of the tank? Oil volumetric expansion coefficient b = 1.0·10-4 K-1. Neglect the expansion of the tank walls during heating.

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