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    A solid metal has height of 10 cm. It is machined until its radius is reduced by 0.5%, its height remaining at 10 cm. using the method of small increment to find the percentage decrease in volume.
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    Guessing its a cylinder so use following below for video.
    V=πr^(2)h

    Haven't done something like this in a while though this video helped me understand it, if you still don't understand after watching then I can help with what you are unsure with:

 
 
 
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