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Using the net below, find the surface area

of the triangular prism.
7 cm
5 cm
15 cm
4 cm
Surface Area
5 cm
7 cm
[?] cm²
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Using the net below, find the surface area of the triangular prism. 7 cm 5 cm 15 cm-example-1
User Audeoudh
by
5.0k points

1 Answer

4 votes

Answer:

118

Explanation:

The total area is the area of the large rectangle in the middle plus the areas of the two triangles.

The length of the entire rectangle is 5 cm + 5 cm + 4 cm = 14 cm.

The width of the rectangle is 7 cm.

Each triangle has a base of 4 cm and a height of 5 cm.

A = LW + 2 × (1/2)bh

A = (14 cm)(7 cm) + (4 cm)(5 cm)

A = 98 cm² + 20 cm²

A = 118 cm²

User CatWithGlasses
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4.5k points