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Please don’t only answer this explain how to figure it out so I have it for future reference

Please Dont Only Answer This Explain How To Figure It Out So I Have It For Future Reference class=

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Konrad509id
The polygon is built of 7 triangles (picture).

[tex]P=7\cdot\dfrac{1}{2}ah\\ a=28.9 \text{ m}\\ h=30 \text{ m}\\\\ P=7\cdot\dfrac{1}{2}\cdot28.9\cdot30\\ P=3034.5 \text { m}^2 \Rightarrow C[/tex]
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