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katrin [286]
2 years ago
8

Help Ill give brainliest

Mathematics
1 answer:
BabaBlast [244]2 years ago
7 0
I don’t see the photo
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Here is a tunnel for a toy train.
jonny [76]

The <em>total</em> area of all six faces of the tunnel is 614.197\pi square centimeters.

<h2>Procedure - Surface area of a tunnel for a toy train</h2>

The surface area of the solid (A) used to represent the tunnel for a toy train is the sum of its six faces (two <em>semicircular</em> sections, inner <em>semicircular</em> arc section, outer <em>semicircular</em> arc section, two rectangles).

<h3>Determination of the surface area of the tunnel based on information of the diagram</h3>

We calculate the surface area as following:

A = 2\cdot \frac{\pi}{2} \cdot [(10\,cm)^{2}-(8\,cm)^{2}] + \pi\cdot (8\,cm)\cdot (30\,cm) + \pi\cdot (10\,cm)\cdot (30\,cm) + 2\cdot (2\,cm)\cdot (30\,cm)

A = 614.197\pi\,cm^{2}

The <em>total</em> area of all six faces of the tunnel is 614.197\pi square centimeters. \blacksquare

To learn more on surface areas, we kindly invite to check this verified question: brainly.com/question/2835293

5 0
2 years ago
I am completely lost and I need help to understand
garik1379 [7]
I think your answer is gonna be 20 


3 0
2 years ago
1)Which choices shows the statement below in if-then form? Exercise makes you healthier.
jek_recluse [69]

Answer:

D for both

Step-by-step explanation:

Exercise is the condition and healthier is the outcome. So if you exercise then you will be healthier.

All cardinals are red. But not all red birds are cardinals. So d is the only one that is always true

6 0
2 years ago
Read 2 more answers
Math:(
dimulka [17.4K]

Answer:

Your friend is incorrect because if you divide 21 by 7 you will get 3 if you add 7 to 3 you get 10 therefore your friend is incorrect.

6 0
3 years ago
3(4x - 1) = 5(2x -1)
Sophie [7]

ANSWER

x = -1

x= 1

x = 3

Step-by-step explanation:

the answer is this

8 0
3 years ago
Read 2 more answers
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