x meters x meters I x meters x meters Note: Figure not drawn to scale. The figure represents a rectangular pool with a width of 20 meters and a length of 25 meters that is surrounded by a concrete border with a uniform width of x meters. If the combined area of the pool and the concrete border is 546 square meters, what is the value of x? A) 0.5 B) 1 C) 5 D) 23