Answer:
≈ 42.85
or 30π
semi-circle is (dπ)*1/2 +d , but we don't need the +d since we don't have that edge so you only use (dπ)*1/2.
From there, and equalateral triangle has all the same sides, so you can assume that the two sides of the triangle added up would be 24.
Finally you add the product of (dπ)*1/2 with 24, and depending on whether it needs to be in exact terms (the decimal) or in terms of pi (the 30 one) you can change it to how it needs to be.
