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oksano4ka [1.4K]
3 years ago
15

A tunnel is 30 yards long and 15 yards wide. The height of the tunnel walls is 5 yards before the curve of the cylinder-shaped c

eiling. What is the volume of the tunnel? Use 3.14 for pi. Round your answer to the nearest hundredth. By the way i don't know how to attatch the image that is to this question . its a image of a mailbox

Mathematics
2 answers:
allochka39001 [22]3 years ago
6 0

Answer:

i just did this on ttm and the answer is 4,899.38 cubic yards


Step-by-step explanation:


Karolina [17]3 years ago
4 0
The tunnel is made of two shapes and we can find the volume of each.
Cuboid volume=15×5×30=2250 cu yds.
Half cylinder volume=π(7.5)²30/2=843.75π=2649.38 cu yds.
Total volume=4899.38 cu yds.
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For this question,The answer is, x=-9
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3 years ago
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snow_lady [41]

Answer:

A. The area is 78.54m^2

B. She needs to cover 1661.9 square feet of tiles for the base of the swimming pool

Step-by-step explanation:

Question A:

Let us assume that the leash is pegged to the ground using a stake. as a result, the dog can move around the stake. The path that the motion of the dog would trace is a circle, and the radius of the circle will be the length of the leash.

Since we know this, we can easily find the area of the circle using \pi r^2

Area of the circle = \pi \times 5 \times 5 = 78.54m^2

Question B

Dulce wants to cover the whole surface area of the floor of the circular swimming pool with tiles.

We already know that the swimming pool is circular, hence, the surface area of the base of the swimming pool will be the same as the area of a circle, with the same radius.

The area of the circle can be calculated using \pi r^2

Area of circle = \pi \times 23 \times 23 = 1661.9ft^2

8 0
3 years ago
Leon created a scale drawing of the school library in his art class.
alukav5142 [94]

Answer:

F

Step-by-step explanation:

The scale drawing is 13 inches. The actual side is 78 feet.

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3 0
3 years ago
If a fish is swimming 20 feet below the surface of the ocean and a bird flying directly overhead of the fish is 12 feet above th
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Answer:

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Step-by-step explanation:

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Bottom left Angle: <br><br> Top Angle:<br><br> Bottom right Angle:
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Angles in a triangle always add up to 180 degrees

Here, we add up all the angles given to equal it to 180 degrees:

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Take 15 from to the other side (then make it negative) to isolate the X:
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The subtract -> 3X = 165

Take 3 over to the other side (and it it should divide 165) and isolate the X -> X = 165/3

Finally, X = 55

Now wherever you see X in the triangle, replace it with 55.

With that, the top angle = 55 + 10 = 65 degrees
The bottom left angle = 55 + 5 = 60 degrees
The bottom right angle = 55 degrees
8 0
3 years ago
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