Does an eight car ferris wheel have rotational symmetry

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?

Which ratio is equivalent to 10: 85

What number produces an irrational number when multiplied by -1.25