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vloume is 5280cm^3 and mass is 5.28kg
sidheshsm21p9jrlp:
i do these type of questions in mind so if you want full solution comment
plz then give the full solution
given as, thickness=2cm and external diameter is 12cm then radius of cylender will be 6cm and the radius of hollow cavity will be 6-2=4cm. then volume of cylinder will be π(6)^2×84-π(4)^2×84 = π(84)(6^2- 4^2) which is 22/7×84×(36-16)=22/7×84×20 , if you solve this you will get 5280cm^3 as volume and 5.28kg weight
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