Jack has 800 feet of fencing to fence off a rectangular field that borders a straight river. he doesn't need to fence along the river. what are the dimensions( l and w ) of the field that has the largest area? what is the largest area?

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.7 days. what is the probability of spending more than 2 days in recovery? (round your answer to four decimal places.)