Respuesta :
use formula P=F/a
since pressure is 400Pa and area is 55m2 ..
400=F/55 then take 55 to the other side by multiplying on both side .. we get 400x55
which is equal to 22000.
since pressure is 400Pa and area is 55m2 ..
400=F/55 then take 55 to the other side by multiplying on both side .. we get 400x55
which is equal to 22000.