I rancher has a three sided plot of land that will be used for grazing sheet each side length is a multiple of 100 one side is 300 yards long and another side of 600 yards long what is the shortest possible length of the third side of the three sided land

I rancher has a three sided plot of land that will be used for grazing sheet each side length is a multiple of 100 one side is 300 yards long and another side o class=