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Subjects
Mathematics CBSE
Class 9
Surface Areas and Volumes
Textbook Questions
16.
Exemplar Exercise Problems II
Exercise condition:
1
m.
The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into it. The ratios of the surface areas of the balloon in the two cases is
\(2:3\)
\(2:1\)
\(1:4\)
\(1:3\)
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