Question 682550
{{{ P = 10 }}}
{{{ W = L - 3 }}}
The formula for perimeter is
{{{ P = 2W + 2L }}}
{{{ 10 = 2W + 2L }}}
and, by substitution:
{{{ 10 = 2*( L-3 ) + 2L }}}
{{{ 10 = 2L - 6 + 2L }}}
{{{ 4L = 16 }}}
{{{ L = 4 }}}
and, since
{{{ W = L - 3 }}}
{{{ W = 4 - 3 }}}
{{{ W = 1 }}}
The area is:
{{{ A = W*L }}}
{{{ A = 1*4 }}}
{{{ A = 4 }}} ft2