4. A container, opened from the top and made up of a metal sheet, is in the form of afrustum of a cone of height 16 cm with radii of its lower and upper ends as 8 cm and 20em, respectively. Find the cost of the milk which can completely fill the container, at therate or 20 per litre. Also find the cost of metal sheet used to make the container, if itcosts ? 8 per 100 cm2. (Take 3.14)tigal angle is 60° is cut into two

4. A container, opened from the top and made up of a metal sheet, is i

1.	4. A container, opened from the top and made up of a metal sheet, is in the form of afrustum of a cone of height 16 cm with radii of its lower and upper ends as 8 cm and 20em, respectively. Find the cost of the milk which can completely fill the container, at therate or 20 per litre. Also find the cost of metal sheet used to make the container, if itcosts ? 8 per 100 cm2. (Take 3.14)tigal angle is 60° is cut into two
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