document.write( "Question 453467: the total area of a sphere is 144 pie square centimeters. what is the diameter? \n" ); document.write( "
Algebra.Com's Answer #311551 by nerdybill(7384)\"\" \"About 
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the total area of a sphere is 144 pie square centimeters. what is the diameter?
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\n" ); document.write( "since the area of a sphere is given as:
\n" ); document.write( "4(pi)r^2
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\n" ); document.write( "We set the above equal to 144 to find the radius:
\n" ); document.write( "4(pi)r^2 = 144(pi)
\n" ); document.write( "dividing both sides by pi:
\n" ); document.write( "4r^2 = 144
\n" ); document.write( "dividing both sides by 4:
\n" ); document.write( "r^2 = 36
\n" ); document.write( "take the square root of both sides:
\n" ); document.write( "r = 6 cm
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\n" ); document.write( "But, the problem wanted the diameter...
\n" ); document.write( "diameter = 2r
\n" ); document.write( "diameter = 2(6)
\n" ); document.write( "diameter = 12 cm (answer)\r
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