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The height of a cone is 30cm. A small co...

The height of a cone is 30cm. A small cone is cut off at the top by a plane parallel to the base. If its volume be `1/27` th of the volume of the given cone, at what height above the base is the section made?
एक शंकु की ऊँचाई 30 सेमी है । एक छोटा शंकु आधार के समानांतर एक तल द्वारा शीर्ष पर काट दिया जाता है। यदि इसका आयतन दिए गए शंकु के आयतन का `1/27` हो, तो तल से कितनी ऊँचाई पर खंड किया जाएगा?

A

19 cm

B

20 cm

C

12 cm

D

15 cm

Text Solution

Verified by Experts

The correct Answer is:
B
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