A milk container is made of metal sheet in the shape of frustum of a cone whose volume is \( 104...

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A milk container is made of metal sheet in the shape of frustum of a cone whose volume is \( 10459 \frac{3}{7} \mathrm{~cm}^{3} \) The radii of its lower and upper circular ends are \( 8 \mathrm{~cm} \) and \( 20 \mathrm{~cm} \) respectively. Find the cost of metal sheet used in making the container at the rate of \( ₹ 1.40 \) per \( \mathrm{cm}^{2} \). (Use \( \pi=22.7 \) )
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