document.write( "Question 1076358: Hi, I'm not sure where to even start I'm not very good at word problems. The topic is quadratic functions. If you can help me out it'd be very much appreciated! :)\r
\n" ); document.write( "\n" ); document.write( "30. Water Fountains A circular fountain sits in front of a city library. A pool of water (84) surrounds a sculpture that sits on a circular platform in the middle. The radius
\n" ); document.write( "of the sculpture is half the radius of the entire fountain. Write an equation to represent the area of the pool. Is the equation a quadratic function?
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Algebra.Com's Answer #691017 by Boreal(15235)\"\" \"About 
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radius of the platform=r
\n" ); document.write( "Area of the platform is pi*r^2
\n" ); document.write( "Area of the whole fountain is 2r
\n" ); document.write( "Area of the whole fountain is pi*4r^2
\n" ); document.write( "Area of the pool is pi*4r^2-pi*r^2=pi(3r^2)
\n" ); document.write( "This is a quadratic function. Its area is the function of the square of the radius.
\n" ); document.write( "It helps to draw this.
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