Ireally need to know the answer to this

Acollege is planning to construct a rectangular parking lot on land bordered on one side by a highway. the plan is to use 680 feet of fencing to fence off the other three sides. what dimensions should the lot have if the enclosed area is to be a maximum?

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u