1 Answer

Dawid Kisielewski · Answer 1 · 2023-05-11T20:39:09+0000

Given : a triangular prism

The lateral surface area is the sum of the rectangular sides

So, the lateral surface area =

$\begin{gathered} 18.2\cdot13+18.2\cdot13+18.2\cdot20.8 \\ =851.76\operatorname{cm} \end{gathered}$

Another method : Find the perimeter of the triangle then multiply by 18.2

$\begin{gathered} 18.2\cdot(13+13+20.8)_{} \\ =18.2\cdot46.8 \\ =851.76\operatorname{cm} \end{gathered}$

so, the answer is option B. 851.76

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