Hey guys I need help on one last problem well, actually two.

1. A rectangular parcel of land is 70 feet longer then it is wide. Each diagonal between opposite corners is 130ft. What are the dimensions of the parcel?

I know the L = 70 + W but other then that, no idea how to even start on this problem.

2. For what values of x is the expression Sqroot of 6x-x^2 defined as a real number?

this one I'm just at a pure loss.

thanks once again