Question 159350
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{{{Perimeter=2(L+W)}}}
But, {{{L=2W}}}, twice as long as its width
So,
{{{P=2(2W+W)}}}
{{{30ft=4W+2W}}}
{{{30ft=6W}}} -----> {{{cross(30)5ft/cross(6)=cross(6)W/cross(6)}}}
{{{W=5ft}}}
And, {{{L=2*5=10ft}}}
Check,
{{{30ft=2(10+5)}}}
{{{30ft=2(15)}}}
{{{30ft=30ft}}}
Thank you,
Jojo</pre>