A1BC is a section of the right triangular prism ABCA1B1C1, and A1C ⊥ BC, A1C1 ⊥ B1C1 (see the figure on the right). Find the area of the section and the volume of the pyramid ABCA1, if A1B1 = 29, A1C1 = 20, and BB1 = 48.
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