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If surface area of a sphere of radius 'R' is equal to curved surface area of a hemisphere of radius 'r', what is the ratio of R/r?

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MCQs on surface areas and volumes, surface areas of cube, cuboid and sphere, surface areas of right circular cylinder and cone, cuboid and cylinder volumes, volumes of right circular cone and sphere.


If surface area of a sphere of radius 'R' is equal to curved surface area of a hemisphere of radius 'r', what is the ratio of R/r?






 
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