please and thank you!

Taking algebra two apex courses and need with these questions

Which shows a reasonable estimation for 124% of 42 using the distributive property?

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