Bantu dijawab, sama cara kerjanya..​

Jawaban:

Tekanan => P = F/A

F = gaya(disoal berarti berat balok)

A = luas penampang bawah(menempel pada tanah)

a) A = p×t = 12×3 = 36cm² = 0,0036m²

P = F/A

P = 30/0.0036 = 8333,3 Pa

b) A = l×t = 8×3 = 24cm² = 0,0024m²

P = F/A

P = 30/0,0024 = 12500 Pa

c) A = p×l = 12×8 = 96cm² = 0,0096m²

P = F/A

P = 30/0,0096 = 3125 Pa