derive the Curved and Total surface areas of cone. why the curved surface area of cone is ?rl not ?rh (DERIVATION IS NOT GIVEN IN VIDEO LESSON)

Asked by Somnath Pal | 26th Dec, 2013, 06:25: PM

Expert Answer:

Answered by Vimala Ramamurthy | 26th Dec, 2013, 10:11: PM

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