Question

A right triangle with sides 3 cm,4 cm and 5 cm is revolved about the side 4 cm find the volume and the total surface area of the cone so formed (take pie =3.14 )​

Answer 1

Answer:

As area of a right angular cone can be calculated using,

A= πr(r+slant height)

considering radius = 4/2 =2,

and height = 3,

Is answer 35.22??