SOLUTION: A water tank has been purchased for the farm. It will be used to water cattle. It is a cylindrical metal container that is 4 feet tall. The area of the bottom circle of the tank is

Algebra ->  Surface-area -> SOLUTION: A water tank has been purchased for the farm. It will be used to water cattle. It is a cylindrical metal container that is 4 feet tall. The area of the bottom circle of the tank is      Log On


   

Question 133004: A water tank has been purchased for the farm. It will be used to water cattle. It is a cylindrical metal container that is 4 feet tall. The area of the bottom circle of the tank is 9.8 square feet. If the cattle drink 168 cubic feet of water a day, how many times per day will the tank have to be filled?

Found 2 solutions by jim_thompson5910, janzavala:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

%287x%5E8-8%29%28x%5E9-5%29 Start with the given expression


Now let's FOIL the expression



Remember, when you FOIL an expression, you follow this procedure:


%28highlight%287x%5E8%29-8%29%28highlight%28x%5E9%29-5%29 Multiply the First terms:%287x%5E8%29%2A%28x%5E9%29=7x%5E17


%28highlight%287x%5E8%29-8%29%28x%5E9%2Bhighlight%28-5%29%29 Multiply the Outer terms:%287x%5E8%29%2A%28-5%29=-35x%5E8


%287x%5E8%2Bhighlight%28-8%29%29%28highlight%28x%5E9%29-5%29 Multiply the Inner terms:%28-8%29%2A%28x%5E9%29=-8x%5E9


%287x%5E8%2Bhighlight%28-8%29%29%28x%5E9%2Bhighlight%28-5%29%29 Multiply the Last terms:%28-8%29%2A%28-5%29=40


7x%5E17-35x%5E8-8x%5E9%2B40 Now collect every term to make a single expression



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Answer:
So %287x%5E8-8%29%28x%5E9-5%29 foils and simplifies to 7x%5E17-35x%5E8-8x%5E9%2B40

In other words, %287x%5E8-8%29%28x%5E9-5%29=7x%5E17-35x%5E8-8x%5E9%2B40

Answer by janzavala(1) About Me  (Show Source):