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2010-02-07T17:42:04+01:00

Zadanie 37 strona 137
a) 20*10 200
P = ------- = ------ =100 [j2]
2 2


4*3 12
P= ---- = --- = 6 [j2]
2 2

b) 0,4*0,3 0,12
P= --------- = ------- =0,06 [j2]
2 2

7*3 21
P= ------- = ----- = 10,5 [ j2]
2 2






101 4 101