Question

curved surface area of a cone of radius 4cm , is 20πcm^2 . Find T.S.A of the same cone in terms of π

plz answer my question

Answer 1

We know that curved surface area of a cone = pirl = 20pi.

Given radius = 4cm.

We know that Area = pir^2

                                 = pi * (4)^2

                                 = 16pi.



 the TSA of the same cone = 20pi + 16pi

                                               = 36pi.


Therefore the TSA of the same cone = 36pi.



Hope this helps!

Answer 2

Hi,

Please see the attached file!


Thanks