Question

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.

Answer 1

Answer:

surface area of cone(double)= 2(3.14 x 4(4+5) )

                                               =226.08

volume of cone=2(1/3 x 22/7 x 4x4 x 3)

                         =2(50.2)

                          =100.4

Answer 2

Answer:

Check your answer please