One-fifth 80438

By what percent does the area of ​​a square increase if its perimeter increases by one-fifth?

Correct answer:

p =  44 %

Step-by-step explanation:

a=1 b=a+a/5=1+1/5=56=1.2  S1=a a=1 1=1 S2=b b=1.2 1.2=2536=1.44  p=100 S1S2S1=100 11.441=44%



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