Question 1076140
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the width is twice the root of the length and the area is 250.
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L, length
2sqrt(L), width
{{{L*2sqrt(L)=250}}}

{{{L*sqrt(L)=125}}}
{{{L*L^(1/2)=125}}}
{{{L^(3/2)=5^3}}}

{{{L^(3/2)*L^(3/2)=5^6}}}
{{{L^3=(5^2)^3}}}
{{{highlight_green(L=25)}}}------length


{{{Lw=250}}}------the given area
{{{25w=250}}}
{{{highlight_green(w=10)}}}------width


Question asked for perimeter.
{{{2*10+2*25}}}
{{{highlight(70)}}}