Question

if in questions related to surface areas and volume if they ask to find surface area of any solid(say a cone or cylinder)... then should we use TSA or CSA formula

Answer 1

Heyaa...

Here's your answer...

______________________________

You have to keep in mind if the 3D figure
is hollow or solid...it is opened from below
or closed.

For eg.If cone has an open base then CSA.

______________________________

HOPE IT HELPS

@Rêyaañ11

Answer 2

for surface area u would generally use TSA but if let's say a cylinder is hollow or not have any cross sections at its ends then u have to put CSA,u just need to stick to basics rest all will be easy for u