Answer:
Weight of 21 kg is misleading as kg is a unit of mass.
F = m g = 21 kg * 9.8 m/s^2 = 206 Newton's
P(pressure) = Force / Area definition of pressure
1 cm^2 = 1.0E-4 m^2
200 cm^2 = .02 m^2
P = 206 N / .02 m^2 = 10,300 N/m^2 = 10,300 Pascals
8.8m questions
11.4m answers