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A sphereing ball contains a sphere within a sphere. The diameter of the inner sphere is 2.1 meters. The outer sphere of the sphereing ball has a diameter of 2.8 meters. Find the volume within the outer sphere but outside the inner sphere. (Round your answer to two decimal places.)

______ m3

Guest Sep 5, 2018
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Formula for sphere volume  = (4/3) pi *  (diameter / 2)^3...so we have....

 

Volume of outer sphere  =  (4/3) pi * ( 2.8 / 2)^3  

Volume of inner sphere  = (4/3) pi * ( 2.1 / 2)^3

 

So...area between the spheres is   (4/3) pi  [  (2.8 / 2)^3  -  (2.1 / 2)^3 ] ≈ 6.64 m^3

 

 

cool cool cool

CPhill  Sep 5, 2018

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