Find the area of the triangle.
Round to the nearest tenth.
\( \begin{array}{ccc}a & b & c \\ 18.2 & 17.1 & 12.3\end{array} \)

Answer

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Answer

3. Round to the nearest tenth: \( A \approx 94.4 \)

Steps

Step 1 ：1. Calculate semi-perimeter: \( s = \frac{a+b+c}{2} \)

Step 2 ：2. Apply Heron's Formula: \( A = \sqrt{s(s-a)(s-b)(s-c)} \)

Step 3 ：3. Round to the nearest tenth: \( A \approx 94.4 \)