A track and field playing area is in the shape of a rectangle with semicircles at each end . The perimeter of the track is to be 1400 meters. What should the dimensions of the rectangle be so that the area of the rectangle is maximum? What is the maximum area?

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.