document.write( "Question 980523: a circular piece of paper of radius 20 cm is cut in half and each half is made into a hollow cone by joining the straight edges. Find the slant height and the base radius of each cone \n" ); document.write( "
Algebra.Com's Answer #601641 by ikleyn(52799)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "The slant height of the cone is equal to the radius of the original circular piece of paper,  i.e  20 cm.  It is obvious.\r
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\n" ); document.write( "\n" ); document.write( "Now,  let  x  be the radius of the base of the cone. \r
\n" ); document.write( "\n" ); document.write( "Then the length of the circle at the base of the cone is  2*pi*r.  From the other side,  it is equal to the length of the half-circle of the radius  20 cm.\r
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\n" ); document.write( "\n" ); document.write( "Thus we have the equation\r
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\n" ); document.write( "\n" ); document.write( "\"2%2Api%2Ax\" = \"2%2Api%2A20%2F2\".\r
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\n" ); document.write( "\n" ); document.write( "Hence,  x = 10 cm.\r
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\n" ); document.write( "\n" ); document.write( "Answer.  The slant height of the cone is  20 cm.  The radius of the base of the cone is  10 cm.\r
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