Engineering Board Exam Reviewer · Solid Geometry: Cones, Spheres, and Frustums · medium
Find the total surface area of a solid hemisphere of radius 6 (curved surface plus the flat base).
- 72 π 226.19
- 108 π 339.29
- 144 π 452.39
- 216 π 678.58
Answer
B. 108 π 339.29
Solution
S=2π r2+π r2=3π r2=3π(36)=108π 339.29.
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