an error 1 % in excess is made while measuring the side of a square . what is the percentage of error in the calculated area of the square ?
"percentage error in calculated area = ( 1 + 1 + ( 1 ã — 1 ) / 100 ) % = 2.01 % answer : e"
divide(multiply(subtract(square_area(add(const_100, 1)), square_area(const_100)), const_100), square_area(const_100))