Question

The outer radius and inner radius of a metallic pipe are 5.5 cm and 4 cm . IF 1 CM3 of pipe weights 15g find weight of 49cm of pipe with solution

Answer 1

Vol of Pipe=πh (R+ r)(R-r)

= ( 22/7)x7(5.5+4) (5.5-4)

22x9.5x1.5=,313.50cm3

weight=313.50x15=4702.50g

4.703kg