check the picture below.
so the playground is really just 3 rectangles and one triangle, now the triangle has a base of 8 and a height of 6. We can simply get the area of each figure, sum them up and that's the area of the playground.

<span>-0.411764706 - 1.35294118 i</span>
You would distribute then combine like terms to get your answer.
I think it would be 3 because if you divide 18/6=3