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CUET
General Aptitude Test
Quantitative Reasoning
Mensuration: 3D
A sphere and a hemisphere have the same radius, then the ratio of their respective total surface areas is:
4 : 1
1 : 1
2 : 1
4 : 3
Sphere : hemisphere
T.S.A. : 4\(\pi \)r2 : 3\(\pi \)r2