CBSE Class 9 Answered
Hello sir,
The lateral surface of a cylinder is equal to the lateral surface of the cone.The radius of the cylinder is equal to the radius of the cone.What is the ratio of the height of the cylinder to that of the slant height of the cone?
thank you
Asked by seeni2005 | 22 Nov, 2018, 04:55: PM
Expert Answer
Let r and h are respectively radius and height of cylinder.
Let R and H are respectively radius and height of cone.
lateral surface area of cylinder = 2πrh ..................(1)
lateral surface area of cone = ..........................(2)
where is slant height of the cone
since radius of cylinder and cone are equal and lateral surfaces are also equal, if we equate (1) and (2), we get
Answered by Thiyagarajan K | 23 Nov, 2018, 01:50: AM
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