Question

Sides of a square are increased by 10% each. Find percentage increase in area of square​

Answer 1

Heya !

Here's your answer.. ⬇

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Let the side of square = s

Area of square = s²

Given that side of square is increased by 10%.

side by increasing 10% = ( 1 + 1/100 )

new side of square = 1.1s

Area of new square = ( 1.1s )²

= 1.21s²

Total increase area = New square area - area of square

= 1.21s² - s²

= 0.21s²

Now, percentage of increased area

=( 0.21s²/ s² ) × 100

= 0.21/100

= 21%

Hence, area of square will increase by 21% .

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Hope it helps..

Thanks :)