Question

If the side of a square is increased by 25%, then its area is increased by​

Answer 1

let each side of the square be a , then area = a2a2 

As given that The side is increased by 25%, then 

New side = 125a/100 = 5a/4 

 

New area = (5a4)25a42  

 

Increased area= 25a216−a225a216-a2 

 

Increase %=[9a2/16]a2*1009a2/16a2*100  % = 56.25%

Answer 2

Answer:56.25%

Step-by-step explanation:

THERE IS A SIMPLE TRICK FOR THIS QUESTION

 1  IF the side of a triangle, rectangle, square, circle, rhombus(or any 2- dimensional figure) are increased by x%, then its area increases by [x*x/100+2x]

2 IF the side of a triangle, rectangle, square, circle, rhombus(or any 2- dimensional figure) are decreased by x%, then its area decreases by [x*x/100−2x]

JUST PUTTING 1st

FORMULA IN THIS QUESTION, WE GET

⟹[x*x/100+2x]

⟹[25*25/100+2×25]

⟹[625/100+50]

⟹50+6.25

⟹56.25%

I hope it may help you......