346. Two circles are given. The length of the first one is 4 centimeters, the second one is 40,000 kilometers (approximately the length of the Earth's meridian); the periphery of each circle is extended by 1 meter (the length of the first became 104 centimeters, the second 40,000,001 meters). Which of these circles experienced a greater change in radius?
346. The radii of both circles are increased by the same length, exactly by $\frac{1}{2 \pi}$ meters.