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A solid hemisphere has radius 14 cm. It ...

A solid hemisphere has radius 14 cm. It is melted to form a cylinder such that the ratio of its curved surface area and total surface area is 2:3. What is the radius (in cm) of its base?
एक ठोस अर्धगोले की तिज्या 14 से.मी. है। इसे पिघलाकर एक बेलन इस प्रकार बनाया जाता है कि उसके बक्र पृष्ठीय क्षेत्रकल तथा कुल पृष्ठीय क्षेत्रफल का अनुपात 2 : 3 है। इसके आधार की त्रिज्या (से.मी. में) कया है?

A

`(10)/(3sqrt(3))`

B

`(14)/(3sqrt(3))`

C

`(7)/(3sqrt(3))`

D

`(21)/(3sqrt(3))`

Text Solution

Verified by Experts

The correct Answer is:
B
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