The volume of a hemisphere is 2425 1/2 cm3. Find its curved surface a

1.	The volume of a hemisphere is 2425 1/2 cm3. Find its curved surface area.
Answer» Volume of a hemisphere = 2425 1/2 = 4851/2 cm³ We know, Volume of a hemisphere = 2/3πr³ 4851/2 = 2/3 πr³ r³ = (4851 x 21)/88 r = 10.5 So, radius of hemisphere is 10.5 cm. Curved Surface Area of hemisphere = 2πr² = 2 × 22/7 × (10.5)² = 693 Curved surface area of hemisphere is 693 cm².

The volume of a hemisphere is 2425 1/2 cm3. Find its curved surface area.

Answer»

Volume of a hemisphere = 2425 1/2 = 4851/2 cm³

We know, Volume of a hemisphere = 2/3πr³

4851/2 = 2/3 πr³

r³ = (4851 x 21)/88

r = 10.5

So, radius of hemisphere is 10.5 cm.

Curved Surface Area of hemisphere = 2πr²

= 2 × 22/7 × (10.5)²

= 693

Curved surface area of hemisphere is 693 cm².