document.write( "Question 321270: I have a circle whose radius increases 2.2' per hour, starting from 0. I have determined that the area of the circle is 60.82' sq after 2 hrs. How do I represent the area as a function of time??? \n" ); document.write( "
Algebra.Com's Answer #230050 by Alan3354(69443)\"\" \"About 
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I have a circle whose radius increases 2.2' per hour, starting from 0. I have determined that the area of the circle is 60.82' sq after 2 hrs. How do I represent the area as a function of time???
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\n" ); document.write( "Area = pi*r^2
\n" ); document.write( "r = 2.2t
\n" ); document.write( "Area = pi*4.84t^2
\n" ); document.write( "= 2.5963t^2
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