document.write( "Question 473725: Please help me! This is really hard and I don't know how to do it. Help would be MUCH appreciated!\r
\n" ); document.write( "\n" ); document.write( "\"Find the surface area of a sphere that has a diameter of 4 cm.\"/
\n" ); document.write( "A.64π cm2
\n" ); document.write( "B. 32/3 pi cm^3.
\n" ); document.write( "C. 4 pi cm^2
\n" ); document.write( "D. 16 pi cm^2\"\r
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\n" ); document.write( "\n" ); document.write( "THANK YOU!!!\r
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Algebra.Com's Answer #324937 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
the formula for the surface area of a sphere is 4*pi*r^2
\n" ); document.write( "if the diameter is 4 cm, then the radius is 2 cm.
\n" ); document.write( "plug that into the equation to get:
\n" ); document.write( "surface area of the sphere = 4*pi*2^2 = 4*pi*4 = 16*pi square cm.
\n" ); document.write( "square cm is also shown as cm^2.
\n" ); document.write( "your answer would be selection D (16*pi*cm^2).\r
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