Problem: an error 5 % in excess is made while measuring the side of a square . what is the percentage of error in the calculated area of the square ?
Rationale: "percentage error in calculated area = ( 5 + 5 + ( 5 ã — 5 ) / 100 ) % = 10.25 % answer : d"
annotated_formula: divide(multiply(subtract(square_area(add(const_100, 5)), square_area(const_100)), const_100), square_area(const_100))