A triangular prism. The rectangular sides are 2.5 millimeters by 8 millimeters, 8 millimeters by 6.5 millimeters, and 8 millimeters by 6 millimeters. The 2 triangular sides have a base of 2.5 millimeters and height of 6 millimeters.

The triangular prism shown has triangular face(s) and lateral face(s).

The area of one triangular face is mm2.

The surface area of the triangular prism is mm2.

One triangular face = 7.5mm2

Surface area=135mm2

Step-by-step explanation:

Area of a triangle (1/2)(bh) so (1/2)(2.5*6)=7.5

The area of the first rectangle is 20 (2.5*8)

The second rectangle is 52 (6.5*8)

The third rectangle is 48 (8*6)

Then you take the area of one triangle and multiply it by 2, which equals 15.

Then you add it all together and get 135

y=mx+b is the final answer!   : )

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