Question

Find the ratio of total surface area of a sphere and a hemisphere of same radius​

Answer 1

Answer:

Step-by-step explanation:

Let,

The radius of both the hemisphere and sphere be 'r'

We know,

Surface area of the sphere =  

And,

Surface area of the hemisphere =  

So, The ratio of total surface area of a sphere and a solid hemisphere of same radius

=  

= 2:1

Answer 2

Answer:

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