Answer:
a. three 30-60-90 triangles b. 6 + 18 or 28.39
Explanation:
b. 6 + 2(6) + 6 = 6 + 18 ≈ 28.39
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+ 18 or 28.39 + 2(6) + 6 = 6 + 18 ≈ 28.39