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Find (i)the lateral or curved surface …

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Find (i)the lateral or curved surface area of aclose cylindrical petrol storage tank that 4.5 m high. (Ii)how much steel was actually used ,if 1/2of the steel actually used was wasted in making the tank

    • Posted by Rimbi Katharpi Katharpi 6 years, 1 month ago

    CBSE > Class 09 > Mathematics
    • 2 answers

    Radhika Jasti 6 years, 1 month ago

    1-1\12 ofx=11/12 of x 11/12×x=87•12 x=87•12×12/11=95•04

    0Thank You

    Radhika Jasti 6 years, 1 month ago

    Here r=4•2\2=2•1 and h=4•5 csa of cylinder=2πrh=2×22\7×2•1×4•5=59•4 steel used=2πrh+2πrr 59•4+2×22\7×2•1×2•1 59•4+27•72=87•12

    0Thank You

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