skspatial.objects.Sphere.surface_area

Sphere.surface_area() → float

Return the surface area of the sphere.

The surface area \(A\) of a sphere with radius \(r\) is

\[A = 4 \pi r ^ 2\]

Returns

np.float64

Surface area of the sphere.

Examples

>>> from skspatial.objects import Sphere

>>> Sphere([0, 0, 0], 1).surface_area().round(2)
12.57

>>> Sphere([0, 0, 0], 2).surface_area().round(2)
50.27