Please answer correctly

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal

9is the geometric mean between x and 12