1.

The ratio of the whole surface areas of a hemisphere and a sphere of same radius is1. 4 ∶ 32. 2 ∶ 33. 3 ∶ 44. None of the above

Answer» Correct Answer - Option 3 : 3 ∶ 4

Concept

Total surface area of sphere = 4πr2

Total surface area of hemisphere = 3πr2

Calculation

Ratio of total surface area of a hemisphere to surface area of sphere = 3πr2 : 4πr2

⇒ 3 : 4



Discussion

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