Nomor 18 tolong bantu dgn menggunakan cara

diket
m = 45 kg
gravitasi = 10
A sepatu = 1 cm2 = 1 × 10^-4 m^2

P = F/A
P = (45×10)/(1 × 10^-4)
P = 450 × 10^4
P = 4.500.000 Pascal
P = 4.500 kPa
P = 4,5 mega Pascal (e)