document.write( "Question 333102: I have a 15ft. x 20ft. pool and need to fill it with 6 inches of water. I tried the formula v=bh=3.14*r squared *h and I come up with v=300=3.14(pie)*r squared*h and I am stuck because it looks like I need the radius of the pool cylinder. If this is the case is the radius half of 15ft. and how or what formula should I use since I need to know how many gallons of water I need in order to fill 6 inches of water in the pool and what will the water weight be total and weight per gallon for transport purposes. My email is chucklisa@ymail.com and I struggle now in college algebra and could use all the advice I can get since I forget how to use these formulas daily. \n" ); document.write( "
Algebra.Com's Answer #238675 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Are you trying to say that your pool is in the shape of an elliptical cylinder with major axis 20 and minor axis 15?\r
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\n" ); document.write( "\n" ); document.write( "If that is the case, you need the area of your ellipse as the value for in the formula .\r
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\n" ); document.write( "\n" ); document.write( "The area of an ellipse is given by:\r
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\n" ); document.write( "\n" ); document.write( "Where is the semi-major axis (half of the major axis, 10 feet in your case) and is the semi-minor axis, half of the minor axis, or 7.5 feet in your case.\r
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\n" ); document.write( "\n" ); document.write( "Putting it all together:\r
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\n" ); document.write( "\n" ); document.write( "Remember, 6 inches is 1/2 foot. You can do your own arithmetic\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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