how to calculated simplest way. plz answer me very urgent
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Answer:
answer: 3) 21 %
Explanation:
Let the original length of the sides be x(which of 100%)
Now if we increase the length by 10%,then:
=>110% of x
=> 11x/10
Original Area = x square
New Area = (11x/10) square
= 121x square/100
To find the increase in area :
we have to find the difference in original area- new area.
(121x square /100)-x square
21xsquare/100
[x square is of 100%]
Increase by % :
= 21xsquare /100*1/x square*100
= 21%
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