Question

Solid angle subtended by area of 2400 cm2 on the surface of a sphere diameter 1.2 m is

Answer 1

Answer:

Answer is 2/3

Step-by-step explanation:

Area = 2400 cm square

Diameter of the sphere is 1.2 m

converted the diameter into cm because area given in cm

Therefore, 1.2m = 120cm

Radius is the half of diameter, so it will be written as  

Radius of the sphere = 120/2

= 60 cm

r^{2} = 60*60

So, 2400/60*60 = 2/3