Jawabanmu

2014-03-02T14:50:43+07:00
R = 1  m^{2}
w = 25 kg
g(percepatan gravitasi) = 10 m/ s^{2}
P (Tekanan) =  \frac{F(gaya)}{A(luas penampang)}
F = w x g = 25 x 10 = 250 N
A = πr² = 3.14 x 1² = 3.14 m²
P =  \frac{250}{3.14} = 79.6 N/m²
atau dengan g = 9.8 m/s²
F = 25 x 9.8 = 245
P =  \frac{245}{3.14} = 78.03 N/m²
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