The surface area of a triangular prism can be calculated by finding the sum of the areas of the two triangular bases and the three rectangular faces.
First, calculate the area of the triangular bases:
Area = (1/2) * base * height
Area = (1/2) * 8 cm * 6 cm = 24 cm²
Next, calculate the area of the three rectangular faces:
Area = length * width
Area = 10 cm * 6 cm + 8 cm * 6 cm + 9 cm * 10 cm
Area = 60 cm² + 48 cm² + 90 cm² = 198 cm²
Add the areas of the two triangular bases and the three rectangular faces to find the total surface area:
Total Surface Area = 2 * 24 cm² + 198 cm²
Total Surface Area = 48 cm² + 198 cm²
Total Surface Area = 246 cm²
Therefore, the surface area of the triangular prism is 246 cm².