Question: Observe the rules for significant digits and precision when answering questions 27 and 28. Add 1.4 + 7.13. ____________ Multiply 7.413 1.4. ____________ 27.

Observe the rules for significant digits and precision when answering questions 27 and 28.


Add 1.4 + 7.13.  ____________ 


Multiply 7.413 ´ 1.4.  ____________ 

 

 

27. Compute the volume of liquid in a barrel that has a height of 8.5 feet and a diameter of 5.8 feet. Use the formula V = πr2h where r is the radius of the barrel and h is the height of the barrel.  ____________  



28. The wages you earn vary directly with the number of hours you work. Suppose you earn $450 for working 30 hours. At that rate, how many hours would you need to work to earn $330?  ____________  


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