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: $A \approx 94.4$