Two isosceles triangular prisms were joined at their bases to form the composite solid shown. The width of base of both prisms is 6 units. A triangular prism. The triangular sides have a base of 6, height of 4, and side lengths of 5. The height of the prism is 10. A second triangular prism. The triangular sides have a base of 6, height of 2, and side lengths of 3.6. The height of the prism is 10. What is the surface area of this composite solid? square units 104 122 158 208