Answer:
The perimeter of the shape is approximately 68.11 yards.
Step-by-step explanation:
Because it is a semicircle, we can say that its perimeter is half that of a circle, plus its diameter.
That gives us the equation:
2πr / 2 + 2r
which we can simplify:
= πr + 2r
= r(π + 2)
≈ 5.14r
So all we need to do is multiply the radius by 5.14, and that tells us the semicircle's perimeter:
5.14 × 13.25 = 68.105
If we round to the nearest hundredth, that gives us:
68.11
