![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The map distance is 12 inches.
\A map has a scale of 1 inch : 40 miles.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6016f75c40f8ded5db583a8201e82664.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4c4918b7dfa5fb0e94fdc1ecc5dd36ce.png\")
(Cross products property)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=64855d79bda2487ad6f4a88a87e1d4c9.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=67d11def6059b54e172df5de9d589de1.png\")
)
The actual distance is 480 miles.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The actual distance is 480 miles.
\