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8. If the triangle ABC in the Question 7 above is revolved about the side 6 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.

8. If the triangle ABC in the Question 7 above is revolved about the side 6 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.

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60787 Points
3 years ago
In this case, r = 12 cm, h = 5 cm. .. Volume = 1ra-2h = 1 x 1t x 12 ' 12 x 5 ems - - x, = 3 3 '-, Ratio of volumes obtained in ::> Question 7 and Question 8: V1 1001t 5 . V = 2401t = 2 12 , i.e., V1 : V2 = 5 : 12.

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