Manuel is a cross-country runner for his school's team. He jogged along the perimeter of a rectangular field at his school. The track is a rectangle that has a length that is 3 times as long as it is wide.
Manuel jogged the perimeter of the track 10 times at the rate of 6 miles per hour for 30 minutes. Manuel's coach wants him to find the area of the field in square feet so that he can include other activities within the rectangle.
Manuel does not have access to other information or measurements.