the side of a square is increased by 25 % then how much % does its area increases ?
"a = 100 a 2 = 10000 a = 125 a 2 = 15625 - - - - - - - - - - - - - - - - 10000 - - - - - - - - - 5625 100 - - - - - - - ? = > 56.25 % answer : b"
divide(multiply(subtract(square_area(add(const_100, 25)), square_area(const_100)), const_100), square_area(const_100))