Question

Find the difference of the total surface area and curved surface area of a
hemisphere of radius 'r'.​

Answer 1

Answer:

They must note that when we cut a sphere in two hemispheres, then apart from the curved part of the hemisphere, we get one more part and that is the circular base whose area is πr2. So we get the total surface area of a hemisphere as 3πr2 whereas curved surface area of a hemisphere as 2πr2.

Step-by-step explanation:

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Answer 2

Answer:

π$r^{2}$

Step-by-step explanation:

Total surface area      = 2π$r^{2}$ + π$r^{2}$ = 3π$r^{2}$

Curved surface area  = 2π$r^{2}$

Difference                  = 3π$r^{2}$ - 2π$r^{2}$

                                   = π$r^{2}$