Acontainer, opened from the top and madeup of a metal sheet, is in the form of
a frustum of a cone of height 16 cm. with radii of its lower and upper ends as
8 cm. and 20 cm. respectively. Find the cost of the milk which can completely
fill the container, at the rate of Rs. 15/liter. Also find the cost of metal sheet
used to make the container if it costs Rs. 5 per 100 cm2
.
(use the value of = 3.14)
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