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andriy [413]
2 years ago
14

Help me pls. this is due tonight

Mathematics
2 answers:
Reika [66]2 years ago
8 0

Answer:

8

Step-by-step explanation:

german2 years ago
4 0
8 cm

The formula to find the surface area of a rectangular prism is SA = 2ab + 2bc + 2ac, where a, b, and c all equal one side of the prism.

To solve this, plug in the value for surface area and the values of the known sides. let’s say a = 3cm and b =5cm and c = y cm. It doesn’t matter with value gets assigned to which letter.

SA = 2ab + 2bc + 2ac
158 = 2(3)(5) + 2(5)(y) + 2(3)(y)
158 = 30 + 10y + 6y
158 = 30 + 16y
128 = 16y
y = 8 cm
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What is the surface area of the triangular prism?
trasher [3.6K]

The surface area of the triangular prism is: B. 72 sq. ft

<h3>Surface Area of a Triangular Prism</h3>
  • The surface area of a triangular prism is given by the formula: SA = bh + (s1+s2+s3)H
  • Where, b is the base, h is the height, and s1+s2+s3 is the perimeter of the triangular base, H is the length of the prism.

Thus, given the triangular prism as shown in the diagram attached below, we have the following:

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s1 + s2 + s3 = 3 + 4 + 5 = 12 ft

  • Plug in the values

Surface area = 4×3 + (12)5 = 12 + 60 = 72

Therefore, the surface area of the triangular prism is: B. 72 sq. ft

Learn more about the surface area of triangular prism on:

brainly.com/question/16147227

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