A sphere and a hemisphere have the same

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 3D

Question:

A sphere and a hemisphere have the same radius, then the ratio of their respective total surface areas is:

Options:

4 : 1

1 : 1

2 : 1

4 : 3

Correct Answer:

4 : 3

Explanation:

Sphere : hemisphere

T.S.A. : 4$\pi $r²: 3$\pi $r²

4 : 3