# Program that will compute the volume of a cone

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Volume of right circular cone is (1/3)*PI*(r^2)*H
Define real variables r, h
Define constant PI or use built in name.
Prompt for input r=?
Read value and store in r
Prompt for height H=?
Read value and store in H.
Print Volume =, (1/3)PI*r^2*H, unit^3

Posted on Dec 31, 2013

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Posted on Jan 02, 2017

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## Related Questions:

### What is the volume of a cone that has a radius of 3.5 and a height of 18.5?

Here is the formula for the volume of a cone. Use it to calculate the volume yourself.
Volume of cone =(1/3)(area of base)*(height)
If the cone is a right circular one
assuming that the radius and the height are expressed in the same units. The result (after you calculate it) will be in cubic units.

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Volume of right circular cone
V=(Area of base)* height/3=PI*(2.2^2)*(4.3)/3 cm^3
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### A program that will compute the volume of a cone

Volume of right circular cone is (1/3)*PI*(r^2)*H
Define real variables r, h
Define constant PI or use built in name.
Prompt for input r=?
Read value and store in r
Prompt for height H=?
Read value and store in H.
Print Volume =, (1/3)PI*r^2*H, unit^3

Dec 27, 2013 | Computers & Internet

### R=8cm, volumne=2411.52 what is the height?

Is this a right circular cone or a right circular cylinder?
Volume of cylinder= Pi*(r^2)*h
Volume of cone is 1/3 of volume of cylinder with same height and radius.
Solve for h
h=(Volume)/(PI*r^2) for cylinder

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### What size cone is needed to hold 150 gallons

You need a cone with a volume of 150 gallons.
The volume of a right circular cone is given by the formula
V_cone=(Area of base *height)/3
Since cone is circular , its base is a disk with a certain radius r. The formula becomes PI*(r^2)*h/3
As you see there are two variables, the radius and the height. There is an infinite number of combinations (radius, height) that will give you a total volume of 150 gallons. You can choose the radius (r) and solve for h, or you can choose the height then solve for the radius.
I suggest you convert gallons to cubic feet or to cubic meters then put
V=Pi*(r^2)*h/3 where V is the value of volume after conversion.
If you choose the radius, then to isolate h, h=(3*V)/(Pi*r^2)
If you choose the height, then to solve for r
r^2=(3V)/(Pi*h)
and r=square root of (3V/(Pi*h))
Now, it is your turn to carry out the rest of the calculation.
It will consist of the value of the radius, and the value of the height.
If the cone is not right circular, the situation becomes more complicated.

Sep 16, 2013 | Office Equipment & Supplies

### What is the ratio of the volume of water in a cone where the level is half of the height of the cone to the total volume of the cone?

Equation to solve

I would nee the height of the cone and the diameter of the opening or circle at the top.

Here is a good webpage to help you too. It has calculators on it that solve the problem
Fluid Mechanics Equation calculators

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### One speaker no sound

I just want to confirm that the solution on another page from francis 8 works perfectly ( http://www.fixya.com/support/t3709832-speakers_stopped_working_cannot ). We have two sets of Creatures in our offices, one had been shelved (by someone less persevering than me) due to this problem years ago and my set started this trouble a few days ago. Troubleshot everything, every cable, setting, combination, spare speakers etc - nothing worked. Opening the offending speaker and pulling back the metal weight behind the speaker cone was the solution for BOTH of our units.
Big smiles all around :-)
Note - When you've opened the plastic shell and loosened the speaker from its mounting, the the big round metal piece/magnet sits within the actual speaker 'cage', slightly behind the speaker cone. It's tight but movable and can be pulled all the way back as far as it can go inside it's housing, away from the speaker cone.
Not sure why it gets pulled forward, but it isn't fixed in position and so could clearly get bumped by dropping the speaker or a reasonable impact of some sort. Once bumped forward it would severely limit cone movement and therefore volume.

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> I turn the volume to a low it still has the odd noise
If there is any drive to the speaker at all (volume not turned off), the rattle is probably coming from a broken 'surround;' the part that keeps the cone centered around the outer edge.
Another point of failure is a structure called a 'spider' that is located between the voice coil and cone that ensures the voice coil stays centered.
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There could be many causes.

Dirty volume control
Dirt in and on the speaker cone
Speaker cone torn slightly
A wireless device that may be too close to them eg cordless phone (I know my cell phone is going to ring before it actually does as I get a signal from my speakers)

I have a can of "electrical contact cleaner" which I use to see if it fixes the first two items.
2nd and third item can only bee seen by opening up the speakers.
for dirt I use an air can for cleaning computers but not too close to the cone.
For a torn cone I replace the speakers.

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