Solution:
The shape of the playground is a triangle.
[tex]\text{ Area of a trinage= }\frac{1}{2}\text{ x base x height }[/tex]For this question, base = 18yd
Height = 4 1/3 yd
It's area therefore is
[tex]\begin{gathered} A\text{ = }\frac{1}{2}\text{ x 18 x 4}\frac{1}{3} \\ A=\frac{1}{2}\text{ x 18 x }\frac{\text{13}}{3} \\ A\text{ = }\frac{234}{6} \\ A=39yd^2 \end{gathered}[/tex]
The area of th playground is 39 square yards