in expressing a length 810472 km as nearly as possible with 3 significant digits , find the percentage error .
error = ( 81.5 – 81.472 ) km = 0.028 . required percentage = [ ( 0.028 / 81.472 ) * 100 ] % = 0.034 % . answer a .
divide(divide(add(multiply(3, const_10), const_4), const_100), const_10)