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P=6*56,25
P=337,5 cm 2
V= 7,5* 7,5*7,5 = 421,875 cm 3
P1=6,5*4,5=29,25
P2=6,5*10=65
P3=10*4,5=45
Pc=2*(29,25+65+45) =139.25 * 2 =278,5cm 2
V=6,5cm * 4,5 cm* 10cm =292,5 cm 3
2,94 dm²=6a2 \:6
0.49=a2
0.7=a
P.S ( 2 to do kwadratu A 3 to do sześciennych) Licze na naj ;)