document.write( "Question 815492: a cone cannot have a surface area greater than 1000pi cm^2. what is the largest radius, correct to one decimal place, that will achieve this if the slant height is 20 cm? \n" ); document.write( "
Algebra.Com's Answer #491004 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" ); document.write( "Hi,
\n" ); document.write( "
\n" ); document.write( "Question states***
\n" ); document.write( "S = \"pi%2Ar%5E2+%2B+sqrt%28r%5E2%2B+h%5E2%29+%3C+1000%2Apt+cm%5E2\"
\n" ); document.write( "And \"sqrt%28r%5E2+%2B+h%5E2%29+=+20cm\"
\n" ); document.write( "\"pi%2Ar%5E2+%2B+20cm+%3C+1000%2Api+cm%5E2\"
\n" ); document.write( " r^2 < 980 |note: 980 = \"+49%2A10\"
\n" ); document.write( " \"r+%3C+7sqrt%2810%29\" (tossing out negative solution for unit measure \n" ); document.write( "
\n" );