Question 882646
Each of the two dimensions increases by
2m on one end and 2m on the other end, so
{{{ L = 2 + 11.5 + 2 }}} and
{{{ W = 2 + 5 + 2 }}}
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{{{ L = 15.5 }}}
{{{ W = 9 }}}
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The formula for perimeter i9s:
{{{ P = 2L + 2W }}}
{{{ P = 2*15.5 + 2*9 }}}
{{{ P = 31 + 18 }}} 
{{{ P = 49 }}}
49 m of fencing are needed