2. Two schoolchildren left two neighboring schools at the same time and headed towards each other. After ten minutes, the distance between the schoolchildren was $600 \mathrm{m}$, and after another five minutes, they met. Find the distance between the schools (in meters).

$\{=1800\}$

$:: 1.1::$ A weight with a mass of 200 g is standing on a table. It was flipped over and placed on the table with a different side, which has an area 15 sq. cm smaller. As a result, the pressure on the table increased by 1200 Pa. Find the area of the side on which the weight initially stood. Give your answer in sq. cm, rounding to two decimal places if necessary.