Posted by Anonymous on Saturday, February 25, 2012 at 7:55am.
a hollow cylindrical pipe is 21m long .its outer and inner diameters are 10 cm and 6cm respectively .find the volume of copper used in making the pipe?/

geometry  Divi shrma, Friday, December 2, 2016 at 3:48am
Akgdvonsbsohcsohskg
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