document.write( "Question 893286: Farmer McDonald's silo has an inside circumference of 24 pi feet. Which of the following is closest to the area of the silo's floor?
\n" ); document.write( "a) 1,800 sq. ft.
\n" ); document.write( "b) 450 sq. ft.
\n" ); document.write( "c) 150 sq. ft.
\n" ); document.write( "d) 75 sq. ft.
\n" ); document.write( "e) 40 sq. ft.
\n" ); document.write( "

Algebra.Com's Answer #541990 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
For a circle,
\n" ); document.write( "\"C=2pi%2AR\"
\n" ); document.write( "and
\n" ); document.write( "\"A=pi%2AR%5E2\"
\n" ); document.write( "So,
\n" ); document.write( "\"24pi=2pi%2AR\"
\n" ); document.write( "\"R=12\"
\n" ); document.write( "and
\n" ); document.write( "\"A=144%2Api\"
\n" ); document.write( "or approximately,
\n" ); document.write( "\"A=452\" \"ft%5E2\"
\n" ); document.write( "
\n" ); document.write( "
\n" );