Respuesta :

[tex]a. \: 125\pi \: units^{2} [/tex]

Answer:

The correct answer is option B.   100π units²

Step-by-step explanation:

Formula:-

The surface area of a sphere = 4πr²

Where r is the radius of sphere

To find the surface area of given sphere

Here r = 5 units

Surface area = 4πr²

 = 4 * π * 5²

 = 4 * π * 25 = 100π units²

Therefore the  correct answer is option B.   100π units²