Javier found that his driveway had an area of 240 ft². If his driveway is 12 ft wide, how long is his driveway?

The area of a rectangle is 45 cm². If one side is 9 cm, what is the length of the other side? 

Christian has a square garden in his backyard that he need to put a fence around. He bought 144 ft to go around all 4 sides. How long is one side of the fence? 

Solve for r.   r/-4 = 8

Ms. Jackson is decorating for STEM night in the gym. She is adding glow tape to the gym floor for an activity. If the short side of the floor took 30ft of tape and the perimeter is 180 ft, what is the measurement of one long side?