What is the upward force acting on the core prints?

Question

 A big casting is to have hole, to be produced by using a core of 10 cm diameter and 200 cm long. The density $\rho _{metal}$ is 0.077  $N/cm^{3}$  and density $\rho _{core}$ is 0.0165N/$cm^{3}$ 

What is the upward force acting on the core prints?                       

(a) 200.5 N                     (b) 1100.62 N

(c) 950.32 N                   (d)350.32 N 3