t_k  =  k(k!),  where  k = 1, 2, 3, ..... n

Sum to n terms. pls give explanations for your solution.

The volume of a sphere is 1.76 cm³. The volume of 25 such spheres taking into account the significant  figure is?

1. 0.44  x  102 cm³


2. 44.0 cm³


3. 44 cm³


4. 44.00 cm³

Pls explain ur answer!!