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When Radius of a cone is …

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When Radius of a cone is 20/100m. And height is 1m . Find C.S.A of cone

Posted by Kavyanjali Kumari 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Vikas Thakur 11 months ago

Given, radius 20/100 m and height 1m By using Pythagoras theorem to find slant height l²=h²+r² l²=1²+(20/100)² l=√104/100 l=2√26 Csa of cone = πrl =22/7×20/100×2√26 =44/35√26m²

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CBSE > Class 09 > Mathematics