Jawabanmu

2014-04-15T23:26:14+07:00
F = W = 40 N 
P = F/A = 40/A, P max jika A min
a. P = F/A = 40/0,2.0,005 = 40/0,001 = 4000 Nm²
b. P = F/A = 40/0,4.0,2 = 40/0,8 = 50 Nm²
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