If the radius of a solid hemisphere is 5 cm, then find its curved surf

1.	If the radius of a solid hemisphere is 5 cm, then find its curved surface area and total surface area, (π = 3.14)
Answer» Given: Radius (r) = 5 cm To find: Curved surface area and total surface area of hemisphere i. Curved surface area of hemisphere = 2πr² = 2 x 3.14 x 5² = 2 x 3.14 x 25 = 50 x 3.14 = 157 sq.cm. ii. Total surface area of hemisphere = 3πr² = 3 x 3.14 x 5² = 235.5 sq.cm. ∴ The curved surface area and total surface area of hemisphere are 157 sq.cm, and 235.5 sq.cm, respectively.

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

Answer»

Given: Radius (r) = 5 cm

To find: Curved surface area and total surface area of hemisphere

i. Curved surface area of hemisphere = 2πr²

= 2 x 3.14 x 5²

= 2 x 3.14 x 25

= 50 x 3.14

= 157 sq.cm.

ii. Total surface area of hemisphere = 3πr²

= 3 x 3.14 x 5²

= 235.5 sq.cm.

∴ The curved surface area and total surface area of hemisphere are 157 sq.cm, and 235.5 sq.cm, respectively.