Question

side of a square increase by 10%,find the increase in area?​

Answer 1

sorry i dont know the answer

Answer 2

Answer:

let side of Square be X .

then

new side of Square be X ×10/100 +X.

therefore

old area =x^2

and new area (X ×10/100+X)^2=(11x/10)^2=121x^2/100

increase in area=new area - old area

=121x^2/100 - x^2 = 21x^2/100

increase in area in percent = 21x^2/100×100 = 21%

as x^2 is old area