Pressure is the force exerted by one body on the another. It is denoted by P and its SI unit is Pascal (Pa) or N/cm2 (in this case)
Pressure equals to Force upon the area.
So the formula forms P = F/A
P = 565 N/cm^2
A = 15 cm^2
F = ?
So, putting the known values in formula,
565 = F/15
F = 565 * 15
F = 8,475 N
So, the weight is 8,475N.
Sorry for my last answer, misread the question.