What will be the percentage of increase in the area of a square when each of the its sides is increased by 10% ? ?->(Show Answer!)

1. What will be the percentage of increase in the area of a square when each of the its sides is increased by 10% ?

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By: anil on 05 May 2019 01.50 am

Let side of square = 10 cm Area of square = $$(10)^2=100$$ $$cm^2$$ If side is increase by 10%, => New side = $$10 imes frac{110}{100}=11$$ cm => New area of square = $$(11)^2=121$$ $$cm^2$$ $$ herefore$$ Increase in area = $$frac{121-100}{100} imes 100$$ = $$21\%$$ => Ans - (D)

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