The answer depends on the size of the compact cars and the layout of the parking lot. If we assume a standard compact car requires a parking space of 20 feet by 15 feet, and the acre land is perfectly square, then the maximum number of compact cars that can park is:
Area of 1 acre = 43,560 square feet
Area required for 1 parking space = 20 x 15 = 300 square feet
Number of parking spaces = 43,560 / 300 = 145.2 cars
Since we can't park a fraction of a car, the maximum number of compact cars that can park in 1 acre land is 145.
