4. Mei is retiling her bathroom walls. Each tile can be described as a polygon with vertices at
points A{10, 6), B(13, 10), C(17,7) and D(14, 3). If each unit is equal to one centimeter, what is
the perimeter of each tile Mei uses?

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.