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Surface Areas And Volumes

Question 2:

A right triangle whose sides are 3 cm and 4 cm (other than hypotenuse) is made to revolve about its hypotenuse. Find the volume and surface area of the double cone so formed. (Choose value of π as found appropriate.)

Answer:

The double cone so formed by revolving this right-angled triangle ABC about its hypotenuse is shown i…

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