document.write( "Question 1204467: Ms.Ikelyn,
\n" ); document.write( "I asked a question here: https://www.algebra.com/tutors/students/your-answer.mpl?question=1204433\r
\n" ); document.write( "\n" ); document.write( "To which you responded (with a helpful!) lesson about a TWIN problem. However, I am confused and need help. What is that \"shift\" term? And can you break it down simpler?\r
\n" ); document.write( "\n" ); document.write( "Thank you Ma'am
\n" ); document.write( "

Algebra.Com's Answer #840745 by MathLover1(20849)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Let us assume these bottles are circles with radius 5cm for simplicity.\r
\n" ); document.write( "\n" ); document.write( "The densest possible packing is hexagonal packing for circles, as shown below:\r
\n" ); document.write( "\n" ); document.write( "\"HJh78\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "For the first layer, we find that the maximum amount of spheres we can fit on the first layer is \"1000%2F%285%2A2%29=100+\"circles. \r
\n" ); document.write( "\n" ); document.write( "Since the second layer is in between the circles, one can only fit \"99\" circles. The third layer can fit another \"100+\"circles and so on.\r
\n" ); document.write( "\n" ); document.write( "Then, we can build an equilateral triangle and show that every stack increases the width of the area filled by \r
\n" ); document.write( "\n" ); document.write( "\"r%2Asqrt%283%29=5sqrt%283%29\"\r
\n" ); document.write( "\n" ); document.write( " Given the first layer has a thickness (remember, circle represents bottles) of \"10cm\", the amount of layers that can be fitted is the floor of \r
\n" ); document.write( "\n" ); document.write( "\"%28%281000-10%29%2F%285sqrt%283%29%29%29%2B1=115.3153532995459\" or \"115\" layers. \r
\n" ); document.write( "\n" ); document.write( "since first two layers have \"%28100%2B99%29+\"circles, and there is \"115%2F2=57.5\", means \"57\"*first two layers have \"%28100%2B99%29\" and \".5=1%2F2\" means we take one more first layer which is \"100\"\r
\n" ); document.write( "\n" ); document.write( "This can be formed into \r
\n" ); document.write( "\n" ); document.write( "\"57%28100%2B99%29%2B100+=11443\" circles, in your case bottles.\r
\n" ); document.write( "\n" ); document.write( "answer: \"11443\" bottles\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );