Question

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

Answer 1

Answer:

Step-by-step explanation:

let the side of the original square be x

then the area would be x²

Now the new side is 125x/100

= 5x / 4

the area would be 25x²/16

the percentage increase is calculated by multiplying with 100 and dividing with x²

25 x² * 100 / 16 * x²

= 25 * 6.25 = 156.25

since the original are was 100% the percentage increase is 56.25%