Question 1079916
{{{pi*r^2=30}}}


{{{r^2=30/pi}}}


{{{r=sqrt(30/pi)}}}

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x, side length of the square print area of the maximum size


{{{x^2=r^2+r^2}}}

{{{x=sqrt(2*r^2)}}}

{{{x=r(sqrt(2))}}}

{{{x=sqrt(2*3*5/pi)sqrt(2)}}}

{{{highlight(x=2*sqrt(15/pi))}}}