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What is the surface area of this triangular pyramid?

8 mm
8 mm
6.9 mm
8 mm
8 mm

1 Answer

3 votes

Explanation:

To calculate the surface area of a triangular pyramid, we need to find the area of each triangular face and add them together.

Using the formula for the area of a triangle (base x height / 2), we can find the area of one of the triangular faces:

base = 8 mm

height = 6.9 mm

area = (8 mm x 6.9 mm) / 2 = 27.6 mm²

Since there are four triangular faces, the total surface area of the pyramid is:

4 x 27.6 mm² = 110.4 mm²

Therefore, the surface area of this triangular pyramid is 110.4 mm².

User Tienou
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