<PRE><B>Question 535946</B>
Two important things are given to you in this question, the perimeter and the length. All you simply have to
do is replace these numbers into the formula you gave. 

P=93
L=25
W=?
93=2w+2(25)
93=2w+50
93-50=2w
2w=43
w=21 1/2 cm
Check it-
2(21.5)+2(25)=93
43+50=93</PRE>