document.write( "Question 230797: My instructor wants to make a wall chart of a computer desktop for this class.She would like the desktop icons to be proportional to the size of her 6x6 chart. if the icons are 3/8 by 3/8, how large should be on her wall chart. \n" ); document.write( "
Algebra.Com's Answer #170961 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
you take a ratio of the area of the icon compared to the area of the computer and then apply it to the wall chart.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The wall chart is 6 feet by 6 feet.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Conver that to inches and the wall chart is 72 inches by 72 inches = 5184 square inches.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "each icon on the computer is 3/8 * 3/8 = .140625 square inches.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Not sure what size computer you are using, but my computer screen measures approximately 13 inches across and 8 inches up.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "That make the area of my screen 8 * 13 = 104 square inches.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The ratio of the area of an icon of .140625 square inches to the area of a typical computer screen (assuming mine is typical - yours might be different) would be .140625 / 104 = .001352163.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Apply that ratio to a screen size of 5184 square inches and you get .001352163 * 5184 = 7.009615385.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Take the square root of that to get 2.647567824 inches by 2.647567824 inches.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Round that off and your icons should be about 2.65 inches by 2.65 inches.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Let's see how that would work out.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The wall chart would hold approximately 5184 / (2.65)^2 icons which would make about 752 icons.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "My computer would hold about 104 / (3/8)^2 icons which would make about 739 icons.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "That's pretty close.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "I would say make your icons about 2.65 inches by 2.65 inches and you would be in the ball park.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Anything between 2.5 and 3 inches by 2.5 and 3 inches should be close enough.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );