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Q&A #7379

Teachers' Lounge Discussion: Volume of a sphere

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From: Loyd <loydlin@aol.com>
To: Teacher2Teacher Public Discussion
Date: 2003101516:28:04
Subject: Re: Re: Vol formula for a sphere, cone & cylinder

It is worth pointing out that a cone with height=diameter of the base
of cylinder and with the diameters of the bases equal, then the volume
of s cone is 1/3 of the cylinder.  

This means that a cone with these dimensions are 1/2 of a sphere with
similiar dimensions.  
To prove:

1/3xpixr^2x2r = (1/2)x4/3xpixr^3

2/3 x pixr^3 = 2/3 x pixr^3



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