A rancher has 240 yards of fence with which to enclose three sides of a rectangular plot (the fourth side is a river and will not require fencing). Find the dimensions of the plot with the largest possible area. (For the purpose of this problem, the width will be the smaller dimension (needing two sides); the length with be the longer dimension (needing one side).)

length = yards
width = yards

What is the largest area possible for this plot?
area = yards-squared

Enter your answers as numbers. If necessary, round to the nearest hundredths.