if each side of a square is increased by 325 % in length , find the percentage change in its area ?
"let each side of the square be a , then area = a x a new side = 325 a / 100 = 13 a / 4 new area = ( 13 a x 13 a ) / ( 4 x 4 ) = ( 25 a ² / 16 ) increased area = = ( 169 a ² / 16 ) - a ² increase % = [ ( 153 a ² / 16 ) x ( 1 / a ² ) x 100 ] % = 956.25 % answer : c"
square_area(add(const_1, divide(325, const_100)))