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aalyn [17]
2 years ago
13

NEED ASAP NEED TO RURN IN FAST!!! WILL MARK *BRAINLIEST*

Mathematics
2 answers:
Travka [436]2 years ago
6 0

Answer:

B

Step-by-step explanation:

We know that:

-measuring a cone
-diameter: 18 units
-height: 8 units

We need to know how to find the volume of this cone. To do this, we need the equation to find the volume of a cone:
V= \pi r^2\frac{h}{3}                   where r=radius and h=height

Upon assessing this equation we also now know that we are missing a radius.

For a circle, the radius is the distance from the midpoint, center, to the border of the circle. The diameter is the distance from the border of one circle to another, passing through the midpoint. Knowing this, we can conclude that the diameter is two times the radius.

Using this information we can figure out the radius for this cone: 9 units.

Now that we have the radius, we can plug in the rest of the numbers with the correct placements.

V= \pi 9^2\frac{8}{3}                    square the 9 by calculating 9 times 9.

V=\pi*81*\frac{8}{3}             combine like terms and keep pi separate.

V=216\pi cubic units
Since this problem is asking for volume, we will used cubic units.

ira [324]2 years ago
3 0
About 1206.4
Substitute 8 for r and 18 for h . Simplify. Therefore, the volume of the cone is about 1206.4
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Find all polar coordinates of point P = (9, 75°).
zubka84 [21]

Answer:

1) (9, 75+360n)

2) (−9, 255+360n)

Step-by-step explanation:

(9, 75) is same as (9, 75 + 360)

so it would be (9, 435)

It can also be expressed as (-9, 75 + 180 degrees)

so (-9,255) degrees

In general, (9,75+360 n) for n≥0 represents half of the possible ways of representing the point : (9,75)  

6 0
3 years ago
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Nutka1998 [239]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
Read 2 more answers
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shutvik [7]

Answer:

-189

Step-by-step explanation:

Remember to follow the rules of signs:

- If there are two positive signs next to each other, you add:

- If there is one negative sign and one positive sign next to each other, you subtract.

- If there is two negative signs next to each other, you add:

- 412 - (-223) = -412 + 223

Subtract:

223 - 412 = -189

-189 is your answer.

~

5 0
3 years ago
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Explain how the segment addition postulate can be modeled using a real-world object
IgorC [24]

To determine the length of AB, one must subtract BC from AC. If the length of AC is 18 and the length of BC is 4, then using this formula yields 18 - 4 = 14, so the length of AB is 14.

This postulate also allows a line segment that has only two known points to be broken into two line segments with the addition of a third point in between the endpoints. This is useful for proofs in geometry and analysis.


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Answer:

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Step-by-step explanation:

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