Răspuns:
Explicație pas cu pas:
6 patrate ......................9 triunghiuri...........................282 m ( : 3)
2 patrate.......................7 triunghiuri............................166 m
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2 patrate ......................3 triunghiuri...........................94 m
2 patrate.......................7 triunghiuri............................166 m
7 - 3 = 4 triunghiuri...................166 - 94 = 72 m
1 triunghi...................................72 : 4 = 18 m
3 triunghiuri.............................18 x 3 = 54 m
2 patrate.........................................................................94 - 54 = 40 m
1 patrat............................................................................40 : 2 = 20 m
