Question 1032397
{{{drawing(400,400,-2.5,2.5,-2.5,2.5, 
locate(-2.1,-1,D), locate(-2,1.2,A), locate(2,1.1,B), locate(2,-1,C),
line(-2,1,-2,-1), line(-2,-1,2,-1), line(2,-1,2,1), line(2,1,-2,1) )}}}
<pre><font face = "consolas" color = "indigo" size = 4><b>
Hi  
AB = {{{4z+3}}}  AND BC = {{{3z+1}}}
Find the length of side AD
AB = CD AND BC = AD
AB + BC + CD + AD = 78  
{{{4z+3}}}+ {{{3z+1}}}  + {{{4z+3}}} + {{{3z+1}}} = 78
 14z + 8 = 78
 14z = 70
z = 70/14
AD = 3z + 1
AD = 210/14  + 1 = 16 Units
checking!! AB = CD = {{{4(70/14)+3}}} = 23
23 + 16 + 23 + 16 = 78