A rectangular parking space is marked out by painting three of its sides. If the length of the unpainted sides is 9 feet, and the sum of the length of the two painted sides is 37 feet, then what is the area of the parking space in square feet?
Answer: C
Clearly,we have l = 9 and l+2b = 37,or b = 14
∴∴Area = (l×b) = (9×14)sq.ft = 126 sq.ft