Hello Viraj,
using a /24 mask is better for LAN:
you need to use NAT to provide internet access
int fas0/0
ip address 10.10.10.1 255.255.255.0
ip nat inside
int ser0/0
ip address 94.56.x.y 255.255.255.252
ip nat outside
access-list 11 permit 10.10.10.0 0.0.0.255
ip nat inside source list 11 interface ser0/0 overload
ip route 0.0.0.0 0.0.0.0 94.56.x.z
! where 94.56.x.z is the next-hop on the wan interface
Hope to help
Giuseppe