Question

a cube of edge length 10 cm is placed inside a liquid. the pressure at the upper face of the cube is 1500 pa. find the force exerted by the liquid on this face?

Answer 1

we know that F =PA 

P=1500

A= (0.1)(0.1) =0.01$m^{2}$

F=(1500)(0.01)=15N

Answer 2

given, P=1500, i.e. P=F/A=1500
now, A=.1*.1=.01
so, F =P*A=1500*.01= 15N