pleasee jawab yaaa pake caranyaaaa

1 rho1x h1= rho2 x h2
13,6 x 2 = rho2 x 14
rho 2 =27,2 / 14
1,94

2. P=F/A
P1=P2
400/10=1000/A
40=1000/A
A=1000/40
25cm^2