Question 975854
The description means that the fencing will go around the garden but not include the two foot surrounding border region.  This surrounding border is therefore not important to the amount of fence to be placed.


x and y, the garden dimensions.


(A),  x=2y using x for the length;
{{{system(A=xy,2x+2y=46)}}}
{{{system(A=2y^2,x+y=23)}}}
{{{2y+y=23}}}
{{{3y=23}}}
{{{highlight(y=23/3)}}}
-
{{{x=2y}}}
{{{x=2(23/3)}}}
{{{highlight(x=46/3)}}}


(B)
{{{A=xy}}}
{{{A=(46/3)(23/3)}}}
{{{highlight(A=1058/9)}}}  or  {{{highlight(117&5/9)}}}


C and D,
Do the necessary adjustments.