document.write( "Question 311930: To accurately measure the radius of a spherical rock, Jeff places a rock into a cylindrical glass containing water. When he does so,, the water level rises .14 inch. The radius of the glass is 2 inches. What is the radius of the rock? \n" ); document.write( "
Algebra.Com's Answer #223287 by scott8148(6628)\"\" \"About 
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the volume of water displaced equals the volume of the rock\r
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\n" ); document.write( "\n" ); document.write( "pi * 2^2 * .14 = pi * 4/3 * r^3
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