A composite cylinder of height ( h=400mm ) is loaded by a compressive force ( P=450kN ) that is applied via rigid end plates. The diameter of the brass core is ( d_b=15mm ) and the outer diameter of the aluminum...

a) ...core is ( 415mm ).
b) ...core is ( 430mm ).
c) ...jacket is ( 415mm ).
d) ...jacket is ( 430mm )