Question

find the csa of a hemisphere where diameter is 3.5​

Answer 1

Diameter =3.5

radius=3.5/2

=1.75

CSA of hemisphere = 2πr²

=2×22/7×(1.75)²

=1925cm²

Hope it help u

Answer 2

Answer:

CSA of hemisphere = 19.25

Step-by-step explanation:

Diameter = 3.5

Radius = 3.5/2

Curved Surface Area of A Hemisphere = 2πr^2

=> 2 * 22/7 * (3.5/2)^2

=> 44/7 * 12.25/4

=> 11 * 1.75

=> 19.25