Answers

2016-03-01T23:05:00+05:30
H=14cm,R=5cm r=4cm
volume of pillar =  \pi (R²-r²)h
=22/7×(5²-4²)14
=22/7(25-16)×14
=22/7×9×14
=396 cm³
weight of the iron=volume ×weightg/cm³
=396×10
=3960
ans A.
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