Please show work how the answer was gotten:
1) How many square centimeters are in 1 square foot?
2) I arrive home to find that my 50 foot by 40 foot basement has 18 inches of water in it. If 1 cubic foot is about 7.48 gallons, how much water will I be pumping out of my basement?
3) People blink about ten times per minute, how many times per hour do they blink?