Odpowiedzi

2010-03-06T18:32:40+01:00
P=30cm²
h=5cm

P=a*h
30=5a/:5
a=6

Ob=4a
Ob=4*6
Ob=24cm
2010-03-06T18:32:41+01:00
30 cm^2 : 5 = 6 cm

6cm *4 = 24 cm

;)))
2010-03-06T18:33:30+01:00
P = 30 cm²
h = 5 cm
Ob = ?

P = a*h
a = P/h
a = 30/5
a = 6 cm

Ob = 4a
Ob = 4*6cm = 24 cm