Answer:15
Step-by-step explanation:
rectangle so we know two sides are equal and other two side are equal so we have X+X+X+4+X+4
so make it algerbra 4X+8=52
get rid of the 8 by subtracting from both side
4X+8-8=52-8
4X= 44
divide both sides by 4 to get rid of the 4
so X= 11
so two sides are 11
and two sides are 11+4 or 15