Respuesta :

Answer:

See below

Explanation:

Here is the first one..... the other two are similar

12 cm^2  =   .0012 m^2

10 kg:      10 kg  * 9.8 m/s^2 =  98 N

Pressure =   98 N / .0012 m^2 = 81 666.7 pascals  = 81.7 kPascal