265. Garden. The four sides of the garden are 20, 16, 12, and 10 meters, and its area is maximized with these dimensions. What is the area?
265. This trapezoid can be inscribed in a circle. The semi-perimeter of its sides is 29. By subtracting each side from this number in turn, we get \(9,13,17,19\). The product of these numbers is 37791. The square root of the obtained number is 194.4, which coincides with the size of the desired area.