Surface Area of Triangular Prisms
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Transcript of Surface Area of Triangular Prisms
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Surface Area of Triangular Prisms
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• Definition:The sum of the areas of all of the faces of a three-dimensional figure.
• Ex. How much construction paper will I need to fit on the outside of the shape?
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A triangular prism has 5 faces.
FRONT
BACK
RIGHT
LEFT
BOTTOM
•2 Triangular bases•3 rectangular sides
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Unfolded net of a triangular prism
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A triangular prism has 5 faces.
FRONT
BACK
RIGHT
LEFT
BOTTOM
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In order to find the surface area, find the area of each face. Then sum all of the
areas.
FRONT
BACK
RIGHT
LEFT
BOTTOM
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Practice Time!
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1) Find the surface area of the triangular prism.
10 ft
20 ft8 ft
5 ft
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1) Find the surface area of the triangular prism.
10 ft
20 ft
10 ft
10 ft
8 ft
8 ft
20 ft
20 ft
5 ft
5 ft
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1) Find the surface area of the triangular prism.
10 ft
20 ft
10 ft
10 ft
8 ft
8 ft
20 ft
20 ft
5 ft
5 ft
40 sq ft
40 sq ft
100 sq ft
100 sq ft
200 sq ft
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40 + 40 + 100 + 100 + 200 = 480 sq ft
10 ft
20 ft
10 ft
10 ft
8 ft
8 ft
20 ft
20 ft
5 ft
5 ft
40 sq ft
40 sq ft
100 sq ft
100 sq ft
200 sq ft
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2) Find the surface area of the triangular prism.
12 ft
16 ft5 ft
8 ft
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2) Find the surface area of the triangular prism.
12 ft
16 ft
12 ft
12 ft
5 ft
5 ft
16 ft
16 ft
8 ft
8 ft
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2) Find the surface area of the triangular prism.
12 ft
16 ft
12 ft
12 ft
5 ft
5 ft
16 ft
16 ft
8 ft
8 ft
30 sq ft
30 sq ft
128 sq ft
128 sq ft
192 sq ft
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30 + 30 + 128 + 128 + 192 = 508 sq ft
12 ft
16 ft
12 ft
12 ft
5 ft
5 ft
16 ft
16 ft
8 ft
8 ft
30 sq ft
30 sq ft
128 sq ft
128 sq ft
192 sq ft
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3) Find the surface area of the triangular prism.
15 ft
22 ft8 ft
10 ft
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3) Find the surface area of the triangular prism.
15 ft
22 ft
15 ft
15 ft
8 ft
8 ft
22 ft
22 ft
10 ft
10 ft
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3) Find the surface area of the triangular prism.
15 ft
22 ft
15 ft
15 ft
8 ft
8 ft
22 ft
22 ft
10 ft
10 ft
60 sq ft
60 sq ft
220 sq ft
220 sq ft
330 sq ft
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60 + 60 + 220 + 220 + 330 = 890 sq ft
15 ft
22 ft
15 ft
15 ft
8 ft
8 ft
22 ft
22 ft
10 ft
10 ft
60 sq ft
60 sq ft
220 sq ft
220 sq ft
330 sq ft
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4) Find the surface area of the triangular prism.
2.5 ft
8 ft2 ft
4 ft
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4) Find the surface area of the triangular prism.
2.5 ft
8 ft2.5 ft
2.5 ft
2 ft
2 ft
8 ft
8 ft
4 ft
4 ft
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4) Find the surface area of the triangular prism.
2.5 ft
8 ft2.5 ft
2.5 ft
2 ft
2 ft
8 ft
8 ft
4 ft
4 ft
2.5 sq ft
2.5 sq ft
32 sq ft
32 sq ft
20 sq ft
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2.5 + 2.5 + 32 + 32 + 20 = 89 sq ft
2.5 ft
8 ft2.5 ft
2.5 ft
2 ft
2 ft
8 ft
8 ft
4 ft
4 ft
2.5 sq ft
2.5 sq ft
32 sq ft
32 sq ft
20 sq ft