What is the volume of hollow cylinder if the outer diameter is 12m, inner diameter is 10 m and the height of cylinder is 42 m ?
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volume of hollow cylinder= πR^2h- πr^2h R=12/2=6cm r=10/2=5cm
=πh(R^2-r^2)
22/7 X 42(6^2-5^2)
=22 x 6(11)
=1452cm^3
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