document.write( "Question 926854: The two spheres above have the same center. One has a radius of 4 cm, and the other has a radius of 5 cm. Approximately how much space is in between the two spheres \n" ); document.write( "
Algebra.Com's Answer #562529 by CharlesG2(834)\"\" \"About 
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The two spheres above have the same center. One has a radius of 4 cm, and the other has a radius of 5 cm. Approximately how much space is in between the two spheres\r
\n" ); document.write( "\n" ); document.write( "sphere A radius 4 cm so r[A] = 4 cm
\n" ); document.write( "sphere B radius 5 cm so r[B] = 5 cm\r
\n" ); document.write( "\n" ); document.write( "distance between the surfaces of the 2 spheres is 1 cm\r
\n" ); document.write( "\n" ); document.write( "to find volume of each sphere and the difference in volume:\r
\n" ); document.write( "\n" ); document.write( "V[sphere] = 4/3 * pi * radius ^ 3\r
\n" ); document.write( "\n" ); document.write( "V[B - A] = V[B] - V[A]
\n" ); document.write( "V[B - A] = 4/3 * pi * 5 ^ 3 - 4/3 * pi * 4 ^ 3
\n" ); document.write( "V[B - A] = 4/3 * pi * (5^3 - 4^3) or 4/3 * pi * ( r[B] - r[A] ) (factored)\r
\n" ); document.write( "\n" ); document.write( "V[B] = 4/3 * pi * 125 = (125 * 4)/3 * pi
\n" ); document.write( "V[A] = 4/3 * pi * 64 = (64 * 4)/3 * pi
\n" ); document.write( "difference is (61 * 4)/3 * pi\r
\n" ); document.write( "\n" ); document.write( "V[B - A] = 4/3 * pi * (125 - 64)
\n" ); document.write( "V[B - A] = 4/3 * pi * 61
\n" ); document.write( "V[B - A] = (61 * 4)/3 * pi
\n" ); document.write( "V[B - A] = 244/3 * pi cm^3\r
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