![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The length(l) of the rectangular field is 200 feet and its width(w) is 150 feet.
\The formula for area of the rectangle ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=be182a0c4b6b5b7ba6eff90842558c36.png\")
.
Substitute the value of ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d2e4b092903ada2b5121a00b157377fb.png\")
in the equation ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=be182a0c4b6b5b7ba6eff90842558c36.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=36c30a675e7caabce7e29823330117de.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e5b372b81976fe925ef39fea0718176a.png\")
.
The cost of fence per one foot is 10 dollars.
\The cost of fence per 30,000 feet is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c5a65ee611081b3520d7153ab7831c66.png\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The cost of fence per 30,000 feet is 300,000 dollars.