how many metres of cloth 3m wide will be required to make a concial having radius of the base 5 m and height 12m.
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https://www.meritnation.com/ask-answer/question/please-ans-following-ques-1-the-curved-surface-area-of-a-c/surface-areas-and-volumes/1774704
https://www.meritnation.com/ask-answer/question/please-ans-following-ques-1-the-curved-surface-area-of-a-c/surface-areas-and-volumes/1774704