To calculate the total surface area of a triangular prism, we need to find the areas of all the individual faces and add them up.
1. Area of the triangular base: 12 square centimeters (from previous calculation)
2. Area of the two triangular faces: Since the triangular faces are identical, we can find the area of one and then multiply by 2.
Using the formula for the area of a triangle:
Area = (base x height) / 2
Area = (6 cm x 4 cm) / 2
Area = 12 square centimeters for each triangular face
3. Area of the two rectangular faces: One rectangle is the smallest rectangle (8 square centimeters) and the other is the largest rectangle (15 square centimeters).
Adding up all the areas:
Total Surface Area = 12 cm^2 (triangular base) + 12 cm^2 (triangular face) + 12 cm^2 (triangular face) + 8 cm^2 (small rectangle) + 15 cm^2 (large rectangle)
Total Surface Area = 59 square centimeters
Therefore, the total surface area of the triangular prism is 59 square centimeters.