Question

calculate the force which produce a pressure of 40000 Newton per metre square or on an area of 0.50 m square

Answer 1

p=f/a
= 40000/.50
=40000*100/50
=40000*2
p =80000 Pa

Answer 2

we know that
pressure=force/area
force =400000
area=0.5m
pressure=40000/0.5
pressure=80000pascal or Nm^-2