Question 948055
Let the length of a side  = {{{ s }}}
The perimeter is {{{ 4s }}}
{{{ s = 13 }}}
{{{ 4s = 4*13 }}}
{{{ 4s = 52 }}} ft
(b)
You used 52 ft of fencel
{{{ 100 - 52 = 48 }}}
48 feet of fence was left over
--------------------------
(c)
{{{ 12.6*48 = 604.8 }}}
You paid $604.80 for the fence
you did not use
----------------