document.write( "Question 805683: A building casts a 20ft shadow at the same time a person who is 5'3 casts a 10ft shadow. How tall is the building? \n" ); document.write( "
Algebra.Com's Answer #485445 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
This is based on similarity of triangles\r
\n" ); document.write( "\n" ); document.write( "x/20 = 5' 3\" /10\r
\n" ); document.write( "\n" ); document.write( "x= (20*21/4 )/10\r
\n" ); document.write( "\n" ); document.write( "x= 5*21/10\r
\n" ); document.write( "\n" ); document.write( "x=10.5 feet\r
\n" ); document.write( "\n" ); document.write( "10' 6\"
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