Question

If the sides of a square are increased by 10%, calculate increase in area of the square.
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Answer 1

Answer:

121%

Step-by-step explanation:

lets day side of the square is 'a'

after increasing 10% new side size will be= 1.1a

area A= a×a= a²

new area= 1.1a×1.1a = 1.21a²

increase in area = new area/old area × 100

= 1.21a²/a²×100

= 121%