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If two solid hemispheres of same base radii $r$, are joined together along their bases, then find curved surface area of this new solid.
Given: Two solid hemispheres of same base radii $r$, are joined together along their bases.
To do: To find curved surface area of this new solid.
Solution:
Curved surface area of a hemisphere $=2\pi r^2$
So, when two solids hemispheres of same base radius are joined together along their bases, then
Curved surface area of newly formed solid sphere $=2\times2\pi r^2=4\pi r^2$
Updated on: 10-Oct-2022
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