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Katen [24]
3 years ago
8

A triangular pyramid has a base with an area of 21.8 square meters and lateral faces with bases of 7.1 meters and heights of 13

meters enter an expression that can be used to the surface area of the triangular pyramid?
Mathematics
1 answer:
Dafna11 [192]3 years ago
4 0

Answer:

  21.8 + (3/2)(7.1)(13)

Step-by-step explanation:

The surface area (SA) is the sum of the base area (B) and lateral area (LA). The lateral area is the sum of the areas of the three face triangles.

  SA = B + LA

  LA = 3((1/2)bh)) . . . . b is the base length of the triangle, and h is its height

Using appropriate substitutions, we have ...

  SA = 21.8 + (3/2)(7.1)(13)

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Answer:

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If it's in decimal form it would be: 1.125

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Step-by-step explanation:

Hope this helps! :))

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Answer:

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Step-by-step explanation:

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as we see there are other sides not labeled. we have to use that area four to help us.

for the top left side, we do 6 - 4 = 2

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Step-by-step explanation:

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