Question

the sides of a square are increased by 50% find the percentage increase in its area​

Answer 1

Answer:

use jii

Step-by-step explanation:

 a variable X changes by A% and another variable Y changes by B%, then overall net change when the two variables are multiplied is given by :

A + B + AB/100

If the change is “increase” it is positive & if the change is “decrease” it is negative.

so for increasing 50% in side so

according to above concept

What will be increase in area of a circle if radius is increased by 50% ?

Ans : 50 + 50 + (50 x 50)/100 = 125%

Answer 2

Answer:

Step-by-step explanation:

Let side of square 2x

Area should be 4x²

Side 2x increased by 50% then it will be 3x

Now the new area will be 9x²

Area increased by 5x² from 4x²

So,

(x²/4x²) x 100

25%