SOLUTION
Given the image in the question, the following are the solution steps to get the area of the triangule
Step 1: Draw the triangle
Step 2: State formula for finding the area of the triangle
Since the triangle in step 1 has three sides, we use the Heron's formula below to get the area of the triangle
[tex]\begin{gathered} \text{Area}=\sqrt{s(s-a)(s-b)(s-c)} \\ \text{where s}=\frac{a+b+c_{}}{2} \end{gathered}[/tex]
Step 3: Write the given sides and substitute to get the value of s
[tex]\begin{gathered} a=209.14,b=434.02,c=482.95 \\ s=\frac{209.14+434.02+482.95}{2}=\frac{1126.11}{2}=563.055 \end{gathered}[/tex]
Step 4: Calculate the area of the triangle
Hence, the area of the triangular region is approximately 45384.60km²
