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A container in the shape of a frusum of ...

A container in the shape of a frusum of a cone having diameters of its two circular faces as 35 cm and 30 cm and vertical height 14 cm is completely filled with oil. If each `cm^(3)` of oil weighs 1.2g, find the cost of oil in the container at the rate Rs 40/kg.

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The correct Answer is:
Rs 560.
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