1. Choose the most appropriate (reasonably close) answer... 
    1. The amount of wrapping paper to wrap a shirt (in a suitably sized box) would be about one __________.
      1. in2
      2. ft2
      1. ft3
      2. yd2 
    2. The amount of plywood to build a doghouse for a small to medium size dog would be about _______ square feet.
      1. 5 - 10
      2. 50 - 100
      1. 500 - 1000
      2. 5000 - 10,000 
    3. The amount of cloth material needed to make a young woman's blouse would be about:
      1. 1 mm2
      2. 1 cm2
      1. 1 m2
      2. 1 km2

     
  2. Choose the most appropriate (reasonably close) answer...  
    1. The amount of water to fill an ordinary bathtub would be about _______ gallons.
      1. 0.8
      2. 8
      1. 80
      2. 800 
    2. The lung capacity of an average adult human would be about:
      1. 20 mL
      2. 5 L
      1. 10 gal
      2. 1 c.c. 
    3. The amount of gasoline needed to fill a car's empty gas tank would be about _______ liters.
      1. 5 - 12
      2. 25 - 35
      1. 55 - 75
      2. 200+

      Human Circulatory System: Exercise #3
  3. The average adult has approximately 4.5 liters of blood in his/her body.  Blood donors are allowed to give one pint (every 56 days).  What percent of the total blood volume is given during each donation?


     

  4. Juice Bottles: Exercise #4 Many fruit juices sold in the grocery store actually contain only 10% fruit concentrate.  If a juice bottle contains 10 oz, how many 200 liter drums of fruit concentrate are needed to manufacture a shipment of 20,000 bottles?
    Earth: Exercise #5
  5. The actual surface area of the Earth is considered to be approximately 196,936,400 mi2.  Using 3960 mi for the (average) radius of the Earth, find the:
    1. Earth's surface area based on this measurement.
    2. relative (percentage) error for the answer to part (a) above.


     

  6. Driveway photo: Exercise #6 A rectangular concrete driveway 63 feet long, 18 feet wide, and with a thickness of 6 inches needs to be constructed.  If the concrete is bought at $95 per cubic yard, then what will be the cost of the driveway's concrete?
    Earth & Jupiter: Exercise #7
     
  7. If the average radii of the Earth and Jupiter (our solar system's largest planet) are 3960 mi and 44,365 mi respectively, how many times larger is Jupiter than the Earth? 


     

  8. Tennis Ball Can: Exercise #8 Tennis balls are commonly packaged three to a cylindrical can, as seen in the illustration (at left).  If the diameter of a tennis ball is 2.5 inches, then approximately how many (fluid) ounces of water would one such empty canister be capable of holding?


     
  9. Lumber Tree: Exercises #9 & #10 A 236¼ ft. tall tree is measured to have a circumference of 49 ft, 6 in at the bottom of its trunk.  Find:
    1. the diameter of the tree at the base of its trunk.
    2. an estimate for the volume of the tree trunk (hint: imagine that the tree is actually a cone).


     
  10. A 2" × 4" (two by four) stud is 8 feet in length.  What is the maximum number of studs which can be milled from the tree in exercise #9 (above)?


     
  11. AWater Heater Unit: Exercises #11 & #12 (link: detailed diagram) water heater and storage tank are typically manufactured together inside a cylindrical container.  One such model is 54.5 inches high and has a diameter of 18 inches.  If you were to wrap the sides of the tank in insulation, how many square feet would be needed?  Neglect covering the top and bottom (i.e., only cover the cylinder wall).  Round the answer up to the nearest whole square foot.

     
  12. The hot water storage tank inside the unit of exercise #11 (above) contains only 40 gallons.  Assuming the diameter is indeed 18", then what would be the actual length of the storage tank compartment?

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