6
3
3
6
The perimeter is about ___
units.

18

Step-by-step explanation:

Adding 6 and 3 gives you the full length of the long side of rectangle  and since 3 is the radius of the circle, the short side if the rectangle would also be equal to 3.

So, the long sides equal 9 and the short sides are 3, making the perimeter 18

i think the answer would be c

54/3 is 18 so 18 is your answer