Answer:
Width = (x-2)
Step-by-step explanation:
The area of a rug is given by 
The length of the rug is (x+6)
We need to find the width of the rug.
The area of a rug is given by :

So, the width of the rug is (x-2). Hence, the correct option is (c).
Answer:

Step-by-step explanation:
p=
,
(22+6)2-21=
44+12-21=
35=
,
If you factor out the equation, you get that 35=4p(if you factor it out)
Therefore,
Surface area = 2(12*12+15*12+15*12) = 1008
1008 * 4 = 4032