Apackage is in the shape of a triangular prism. the bases are right triangles with perpendicular legs measuring 9 centimeters and 12 centimeters. the distance between the bases is 10 centimeters.

what is the surface area of the triangular prism?

We compute for the surface area of the triangular prism by the adding the areas of the bases and the sides. There are two triangles and the areas will be,
                              A = 2 (1/2)(9 cm)(12 cm) = 108 cm²

There are three sides which are in rectangular shape.
                               A1 = (10)(12) = 120 cm²
                               A2 = (10)(9) = 90 cm²
                               A3 = (10)(15) = 150 cm²

The sum of these areas is 468 cm². 

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