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Nikitich [7]
3 years ago
10

Help me fr this time

Mathematics
2 answers:
Aneli [31]3 years ago
4 0

Answer:

228

Step-by-step explanation:

[Formulas Below]

Surface area means the sum of all the shapes on the figure, which means we have to calculate each area of the shapes on the triangular right prism and add them up. To calculate the triangles, we plug in 6 and 5 and get 15. Since there are 2 triangles, we multiply it by 2. Next, we have to find the areas of the rectangles. 11 * 6.5 = 71.5 (There are two of them so you multiply by 2), and 11 * 5 = 55. Finally, we add all of these up. 15 * 2 + 71.5 * 2 + 55 = 30 + 55 + 143 = 228. The surface area is <u><em>228</em></u>.

<u><em>Area of Triangle = (Length * Height)/2</em></u>

<u><em /></u>

<u><em>Area of Rectangle = Length * Width</em></u>

mina [271]3 years ago
3 0
228! The answer is correct :)
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