Sara had 7/8 pound of turkey. she used 2/3 pound for sandwiches. how many pounds of turkey does sara have left?

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