A hollow cylidrical tube open at both ends is made of iron 3cm thick . if the external diameter be 56cm and the length of the tube be182cm, find the number of cubic cm in it
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Step-by-step explanation:
h = 182 cm, Ri = 28-3 = 25 cm,
Ro=28 cm
volume = π*(Ro^2 - Ri^2)*h
=22/7*(28^2 - 25^2)*182
= 90948 cm^3
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