Question

Answer 1

Đợi bạn KT xong r mik giúp sau:)

Answer 2

\(p=d.h=8000.\left(0,8-0,3\right)=8000.0,5=4000\dfrac{N}{m^2}\)

\(\Rightarrow A\)

Answer 3

\(h=80cm-30cm=50cm=0,5m\\ d=8000\dfrac{N}{m^3}\\ \Rightarrow p=d.h=8000.0,5=4000\left(Pa\right)\\ \Rightarrow A\)