Find the area $ A $ of a triangular prism if side $a = 2$ and length $l = 2.5$.
Answer
$A = 18.4641$
Explanation
To find area $ A $ use formula:
$$ A = \frac{ a^2 \sqrt{3}}{2} + 3 a l $$After substituting $ a = 2 $ and $ l = 2.5 $ we have:
$$ A = \frac{ 2^2 \sqrt{3}}{2} + 3 \cdot 2 \cdot 2.5 $$$$ A = \frac{ 4 \sqrt{3}}{2} + 3 \cdot 5 $$$$ A = \frac{ 4 \sqrt{ 3 }}{2} + 15 $$$$ A = 2 \sqrt{ 3 } + 15 $$$$ A = 18.4641 $$This page was created using
Triangular Prism Calculator