The perimeter of a semicircle is equal to half the circumference plus the diameter
[tex]P(\text{semicircle)}=\frac{1}{2}C+d[/tex]C is the circumference
d is the diameter
The rule of the circumference is
[tex]C=\pi\times d[/tex]Since the diameter of the semicircle is 2 yards
d = 2
Since pi = 3.14, then
By using the rule of the perimeter above
[tex]\begin{gathered} P=\frac{1}{2}\times3.14\times2+2 \\ P=3.14+2 \\ P=5.14\text{ yards} \end{gathered}[/tex]The perimeter of the semicircle is 5.14 yards