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A cylindrical glass is made up of steel whose internal radius is 7 cm and external radius is14 cm and and height is 10cm,then find its volume in cubic centimetre. (assuming the glass is uniform and the width of steel is same everywhere)

 Jul 1, 2020
 #1
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I think you want the volume contained between the   7 and 14 cm radii?

 

Volume of cylinder = pi r^2 h  

 

Take the volume of the 14 cm cylinder   then subtract the 7 cm cylinder

 

pi (14^2)*(10)    - pi 7^2(10) = ........   cm 3

 Jul 1, 2020
 #2
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That answer is wrong.

Guest Jul 1, 2020
 #3
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Bummer......then I do not understand what your question is asking.....cheeky

ElectricPavlov  Jul 1, 2020

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