XPERTS plzzz answer this question: In the chapter "SURFACE AREAS AND VOLUMES" FOR CLASS 10 MATHS HOW DE KNOW WHEN SHOULD WE ADD OR SUBTRACT BASE AREA? I M NOT REFERRING TO A PARTICULAR QUESTION BUT THE WHOLE CHAPTER IN GENERAL.......

Dear student,
Whenever question asks about Curved Surface Area then we do not include the base, however when the question asks about Total Surface Area at that time we do include the top and the bottom area both.
Now, in case of open vessels, like buckets if question is asked about Total Surface area you should include the Curved Surface Area and the area of bottom and not that of the top, because a bucket cannot be closed at the top.

Regards

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