Question

the curved suface area of a cone is 204.1 sq cm . radius of its base is 5 cm . find the perpendicular height of the cone . (π=3.14)=??

Answer 1

CSA of cone=πrl
CSA=3.14*5*l
204.1=3.14*5*l
13=l
now using Pythagoras theorem
(13)^2=5^2+h^2
h^2=144
h=12

Answer 2

hope this will help you :)