Why traditional indian utensils bottom used to be round?

or:Why traditional indian utensils bottom used to be round?or:I looked at pictures at images.google.com and did not see what you are talking about. M

or:Why traditional indian utensils bottom used to be round?

or:I looked at pictures at images.google.com and did not see what you are talking about. Maybe you have only seen round bottomed utensils.

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