Question 365454
<pre><font size = 3 color = "indigo"><b>
Hi, 
l/w = 2/3
l = (2/3)w
question states
20cm = w + w + (2/3)w + (2/3)w
solve for width
20cm =10/3 w
6cm = width, length then is 4cm

checking our answer
2*6cm + 2*4cm = 12cm + 8cm = 20cm