Let the radius of hemisphere be r cm

Volume of hemisphere is given by πr³

Given, volume of hemisphere = 24251/2 cm³

∴ π r³ = 24251/2

⇒ r³ = 4851 × 1/2 × 3/2 × 7/22

⇒ r³ = 1157.625 cm³

⇒ r = (1157.625)^1/3 cm

⇒ r = 10.5 cm

Curved Surface Area of hemisphere = 2πr²

Curved Surface Area of hemisphere = 2 × 22/7 × (10.5)² cm²

= 693 cm²

∴ Curved surface area of hemisphere = 693 cm²