document.write( "Question 1102122: A square rock garden with sides of 90 feet is placed in the middle of a circular grass yard. If the circumference of the yard is 520 feet, then how much area is covered by grass? \n" ); document.write( "
Algebra.Com's Answer #716774 by greenestamps(13209)\"\" \"About 
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\n" ); document.write( "The other tutor didn't read the problem correctly....

\n" ); document.write( "The circular grass yard has a circumference of 520 feet.
\n" ); document.write( "The radius of the yard is \"520%2F%282%2Api%29+=+260%2Fpi\" feet, or about 82.76 feet.
\n" ); document.write( "The area of the yard is (pi)*r^2: \"%28pi%29%2A%28260%2Fpi%29%5E2\", about 21517.75 square feet.

\n" ); document.write( "The square rock garden in the middle has an area of 90^2=8100 square feet.

\n" ); document.write( "The area of grass in square feet is \"21517.75-8100=13417.75\".
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