alleryThe total surface area of a hemisphere of radius r is:
A3 pi r squared
B2 pi r squared
C4 pi r squared
Dpi r squared
Answer & Solution
Correct answer: A. 3 pi r squared
1. The curved part is 2 pi r squared.
2. The flat circular face adds pi r squared.
3. Together they give 3 pi r squared.
_Source: syllabus Mathematics, Chapter 13, Surface Areas and Volumes._
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