Let normal side be x
15% more side = x+ (15/100*x)
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.
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