Help me please yaaaaaahhhhhh

Diketahui
Area alas=4×4=16cm^2= 16×10^-4 m^2
p(massa jenis)=2700kg /m^3
volume balok =4×4×10=160cm^3=160×10^-6m^3=
16×10^-5m^3
2700=M/16×10^-5
27×16×10^-3=M
m=432×10^-3 kg

P=(0,432×9,8)/0,0016
=4,2336/0,0016
=2646 pascal