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26-04-2017
Mathematics

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How does the area of a circle change if the radius is multiplied by a factor of n, where n is a whole number??

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apologiabiology apologiabiology

26-04-2017

a=pir^2
if multipied by factor of n then

replace r with nr

a=pi(nr)^2
a=pi(n^2)(r^2)
a=(n^2)(pir^2)
the area will be multiplied by a factor of n^2

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