Surface Areas and Volumes · Class 10 · CBSE Mathematics
If two solid hemispheres of same base radius r are joined together along their bases, then the curved surface area of this new solid is:
Practice question from Surface Areas and Volumes (Class 10 · CBSE Mathematics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-64A698
If two solid hemispheres of same base radius are joined together along their bases, then the curved surface area of this new solid is:
- A.2\pi r^2
- B.3\pi r^2
- C.4\pi r^2Correct answer
- D.6\pi r^2
Solution
Joining two solid hemispheres of radius along their flat circular bases results in a complete sphere of radius . The curved surface area (which is the total surface area) of a sphere of radius is .
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