- A616
- B278
- C308
- D338
Step-by-Step Solution
Ball SA = 4*π*. Bowl CSA = 2*π*. Difference .
Answer: C) 308
A hemispherical bowl and a full spherical ball both have radius 7 cm.
The bowl is to be painted on its curved surface only and the ball all over.
Find how much more area (in ) the ball needs than the bowl's curved surface (take π = 22/7). (CSA = curved surface area, TSA = total surface area)
Class 9Surface Area of a SphereMensuration
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