Please solve this?
A right angled triangle whose sides are 15 cm and 20 cm , is made to revolve about its hypotenuse. What will be the volume of the cone so formed?
A right angled triangle whose sides are 15 cm and 20 cm , is made to revolve about its hypotenuse. What will be the volume of the cone so formed?
1 Answer
Explanation:
See Fig 1.
Draw a line
Area of
As shown in Fig 2,
after revolving about the hypotenuse
volume of a cone is given by
where
Now you have 2 cones, cone 1 and cone 2.
cone 1 :
cone 2 :
let
total volume of the cones