<image>As shown in the figure, using a wall $$EF$$ ($$EF$$ can be utilized up to $$28$$ meters), a rectangular garden $$ABCD$$ is enclosed. On the side $$BC$$ parallel to the wall, a $$2$$ meters wide entrance $$($$MN$$ as shown in the figure, where no wall is to be built$$). Using materials for constructing a $$60$$ meters long wall, when the length $$BC$$ of the rectangle is how many meters, the area of the rectangular garden is $$300$$ square meters? 