Apark has a walking path in the shape of a rectangle. the side by a lake is 180 meters. the walking path also has a 200-meters long diagonal that takes walkers to a basketball court. how long is the side adjacent to the side by the lake?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.