RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 21. Surface Area and Volume of a Sphere

Subject: Mathematics - Class 9th

Q. No. 7 of CCE - Formative Assessment

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7

If a sphere of radius 2r has the same volume as that of a cone with circular base of radius r, then find the height of the cone.

Volume of a sphere = (4/3)πr3


Volume of a right circular cone = (1/3)πr2h


Given, a sphere of radius 2r has the same volume as that of a cone with circular base of radius r



h = 32r


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