SOLUTION: What is the surface area of a sphere if a hemisphere with the same radius had a surface area of 69π cm^2
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Question 1109981: What is the surface area of a sphere if a hemisphere with the same radius had a surface area of 69π cm^2
Found 2 solutions by ikleyn, greenestamps:
Answer by ikleyn(52898) (Show Source): You can put this solution on YOUR website!
.
A sphere is comprised of 2 (two, TWO) hemispheres.
Answer by greenestamps(13214) (Show Source): You can put this solution on YOUR website!
The formula for the surface area of a sphere is
On a hemisphere, the curved surface area is therefore and the flat surface area is , so the total surface area is .
So the surface area of the sphere is 4/3 the surface area of the hemisphere.
The surface area of the sphere is 92pi cm^2.
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