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.

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as0301761 as0301761 · Answer 1 · 2020-05-02T08:59:19+02:00

Answer:

Step-by-step explanation:

The triangular prism shown has 2 triangular face(s) and 3 lateral face(s).

The area of one triangular face is 7.5 mm2.

The surface area of the triangular prism is 135 mm2.

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ashishdwivedilVT ashishdwivedilVT · Answer 2 · 2022-04-23T11:30:30+02:00

The total surface area of the triangular prism is 135 square mm.

A prism with a triangular base is called a triangular prism.

Dimensions of lateral faces are:

1) 2.5 mm by 8 mm

So the area of this face = 2.5*8 =20 square mm

2)8 mm by 6.5 mm

So the area of this face = 8*6.5 =52 square mm

3)8 mm by 6 mm

So the area of this face = 8*6 =48 square mm

So lateral surface area of prism = 20+52 +48 = 120 square mm

Dimensions of triangular bases are:

1) 2.5 mm by 6 mm

So the area of one base = 0.5*2.5*6 =7.5 square mm

2)2.5 mm by 6 mm

So the area of another base =0.5*2.5*6 =7.5 square mm

So, the area of the two bases =7.5+7.5 =15 square mm

Total surface area = lateral surface area + base area

Total surface area =120+15 =135 square mm

Hence, the total surface area of the triangular prism is 135 square mm.

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