...but something is wrong

During a thunderstorm, a total of 1.10 in of rain falls. What weight of water (in pounds) falls on 5.00 acres of land? (640 acre = 1 mi2) You will need to use the fact that 1 ft3 of water weighs 62.4 lb.

i did all my measurments i think correct....and I got something around 242lbs....does that sound right?