Spherical degree is a unit of a spherical area taken as 1/720 of the surface of the sphere. How many spherical degrees hemispheres have?

$\text{Spherical Degree} = \frac{1}{720}(4\pi R^2)$

$\text{Spherical Degree} = \frac{1}{180}\pi R^2$
 

For Hemisphere:
$\text{No. of Spherical Degree} = \dfrac{2\pi R^2}{\frac{1}{180}\pi R^2}$

$\text{No. of Spherical Degree} = 360$