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A container open at top is in the form of a frustum of a cone of height 21cm with radii of its lower and upper circular ends as 8cm and 20cm respectively. Find the cost of milk which can completely fill the container at the rate Rs 40 per litre.

    • Posted by Abhishek Gupta 6 years, 11 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Madhu Wadekar 6 years, 11 months ago

    5,49,120 rs

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