Jimmy is building a frame for his square garden he doesnt want the garden to be any bigger than 100ft squared what is the biggest length that each side of the garden could be

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?