RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 21. Surface Area and Volume of a Sphere

Subject: Mathematics - Class 9th

Q. No. 3 of CCE - Formative Assessment

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3

The ratio of the total surface area of a sphere and a hemisphere of same radius is

Total surface area of a sphere = 4πr2


Total surface area of a hemisphere = 2πr2 + πr2 = 3πr2


Ratio of the total surface area of a sphere and a hemisphere of same radius = 4 : 3

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