When heated an iron bar expands 0.2% . If the increased length is 1cm , what is the original length of the bar ?
When heated an iron bar expands 0.2% . If the increased length is 1cm , what is the original length of the bar ? Correct Answer 500cm
0.2% = 1cm 1% = 1/0.2%cm 100% = ( 1 * 100% ) /0.2% cm = 500cm