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2 years ago

Arianna has a tent for her dollhouse. What is the surface area of the tent? 159 mm2 192 mm2 123 mm2 168 mm2

Mathematics

2 answers:

Black_prince [1.1K]2 years ago

7 0

Answer:

The surface area is $168\ mm^{2}$

Step-by-step explanation:

we know that

The tent is a triangular prism

see the attached figure to better understand the problem

The surface area of the triangular prism is equal to

$SA=2B+PL$

where

B is the area of the triangular face

P is the perimeter of the triangular face

L is the length of the prism

Find the area of the triangular face B

$B=\frac{1}{2}(6)(4)=12\ mm^{2}$

Find the perimeter of the triangular face P

$P=(6+5+5)=16\ mm$

we have

$L=9\ mm$

substitute the values

$SA=2(12)+(16)9=168\ mm^{2}$

kirill [66]2 years ago

6 0

Answer:

168

Step-by-step explanation:

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3 years ago

Read 2 more answers