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Question -

If the triangle ABC in the Question 7 above is revolved about the side 5 cm, then find the volume of the solid so obtained. Find also the ratio of the volumes of the two solids obtained in Questions 7 and 8.



Answer -

On revolving the right Δ ABC about the side BC(= 5 cm), we get a cone as shown in the § adjoining figure.
Volume of solid so obtained

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