Ex. 17. A quadrilateral is inscribed in a circle of radius 25, the diagonals of which are perpendicular and equal to 48 and 40. Find the sides of the quadrilateral.
Ex. 17. $5 \sqrt{10}, 9 \sqrt{10}, 13 \sqrt{10}, 15 \sqrt{10}$. Hint. Find the distances from the center of the circle to the midpoints of the diagonals.