Volume of hemisphere = 2425 1/2 cu cm or 2425.5 cu cm.

Volume of hemisphere = 2/3πr³

2425.5 = 2/3× 22/7× r³

r³ = (2425.5×21)/44

r³ = 50935.5/44

r³ = 1157.625

r = 10.5 cm

Now,

Curved Surface Area of hemisphere = 2πr²

= 2 × 22/7 × 10.5 × 10.5

= 693 sq cm

CSA of hemisphere is 693 sq cm.

Verified answer

Volume of hemisphere = 2425 1/2 cu cm or 2425.5 cu cm.

Volume of hemisphere = 2/3πr³

2425.5 = 2/3× 22/7× r³

r³ = (2425.5×21)/44

r³ = 50935.5/44

r³ = 1157.625

r = 10.5 cm

Now,

Curved Surface Area of hemisphere = 2πr²

= 2 × 22/7 × 10.5 × 10.5

= 693 sq cm

CSA of hemisphere is 693 sq cm.