Q2 of 32 Page 123

If the radius of a solid hemisphere is 5cm, then find its curved surface area and total surface area. (π = 3.14)

Given: Radius of hemisphere = 5 cm

Curved surface area is given by,


Curved surface area = 2πr2


= 2 × 3.14 × 52


= 157


Total surface area is given by,


Total surface area = 3πr2


= 3 × 3.14 × 52


= 235.5


Thus, curved surface area of hemisphere is 157 cm2 and total surface area of hemisphere is 235.5 cm2.


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