Question 339845
The area of the triangle is,
{{{At=(1/2)bh=(1/2)(5)(12)=30}}}
The area of the rectangle is,
{{{Ar=L*W=8L}}}
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{{{8L=30}}}
{{{L=15/4}}}
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The perimeter of the rectangle is,
{{{P=2L+2W=2(15/4)+2(8)}}}
{{{P=15/2+16}}}
{{{P=15/2+32/2}}}
{{{highlight(P=47/2)}}}