Question

if the side of a square is decreased by 10% and 20% find the change in its area​

Answer 1

Step-by-step explanation:

x+y+xy/100 here x=y=-10%, thus corresponding change in area is given by, 10% change in area of square= (-10)+(-10)+((-10)(-10)/100))= -20+100/100=-20 Therefore, change in the area of square is 20% decrease.