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Find(i) the lateral or curved surface ar...

Find(i) the lateral or curved surface area of a closed cylindrical petrol storage tank that is4.2 m in diameter and 4.5 m high.(ii) how much steel was actually used, if `1/(12)` of the steel actually used was wasted in making the tank

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The correct Answer is:
(i) 59.4 `m^(2)`
(ii) 95.04 `m^(2)`
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