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Let normal side be x 15% more side = x+ (15/100*x) =100x+15x/100 =1.15x area with normal side = x^2 area with 15% more side = (1.15x)^2 = 1.3225x^2 Therefore,area increases by 32.25%.

example :- let the normal side be 100m therefore 15%more = 115/m area of simple side = 100*100= 10000m^2. area of 15% more = 115*115 = 13325m^2. So,extra area = 13225-10000=3225 which is 32.25% more. Hope this helped u. Please mark as brainliest answer....

Let side of a square be m Area=m^2 If side is increased by 15% increase in side=m*15/100 =3m/20 New side=m+3m/20 =23m/20 New area=(23m/20)^2 =23^2*m^2/20^2 Increase in area=(23^2*m^2/20^2)-m^2 =m^2(23^2-20^2)/20^2 =129m^2/400 Increased percentage in area =(129m^2/400)*100/m^2 =119m^2*100/400m^2 =32.25% Ans.