A container, opened from the top and made up 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 20 per litre. Also find the cost of metal sheet used to make the container, if it
costs 8 per 100 cm. (Take it = 3.14)
5. A metallic right circular cone 20 cm high and whose vertical angle is 60° is cut into two
parts at the middle of its height by a plane parallel to its base. If the frustum so obtained
1
be drawn into a wire of diameter cm, find the length of the wire.
16... please answer
cm, respectively. Find the cost of the milk which can completely fill the container, at the
rate of 20 per litre. Also find the cost of metal sheet used to make the container, if it
costs 8 per 100 cm. (Take it = 3.14)
5. A metallic right circular cone 20 cm high and whose vertical angle is 60° is cut into two
parts at the middle of its height by a plane parallel to its base. If the frustum so obtained
1
be drawn into a wire of diameter cm, find the length of the wire.
16... please answer
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