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"3 Find the lateral curved surface area of a cylindrical petrol storage tank that is\n4.2\\( \\mathrm { m } \\) in diameter and 4.5\\( \\mathrm { m } \\) high. How much steel petroly used, if \\( \\frac { 2 } { 12 } \\) of\nsteel actually used was wasted in making the closed tank."
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Find the lateral curved surface area of a cylindrical petrol storage tank that is 4.2 m in diameter an 4.5 m high. How much steel was actually used, if 112 of steel actually used was wasted in making the closed tank?
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Q2
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