If the side of a square is increased by 30% then the find percentage increases its area
Answers
Answer:
percentage increase in area is 69 %
Step-by-step explanation:
Area of square = side x side
=10*10 = 100 units sq. ...............(i)
area increased by 30% . so,
=> 10+(10*30/100) = 13 units
now , again from area of square side x side
= 13*13=169 units sq. ................(ii)
changement in area of square :
subtracting equation (i) from (ii) --
=> 169–100 = 69 units sq.
percentage difference --
=> (69/100)*100 = 69%
OR
from area of square : X x X = x^2
= (x+0.3x)*(x+0.3x) = (x+0.3x)^2 = x^2 + 0.09 + 0.6x
=x^2 + 0.09 + 0.6x - x^2 = (0.6x +0.09)/x^2*100
= 69%