Oblicz PC.
Oto wzór: Pc= 2ab + 2ac + 2bc
8cm x 8cm x 1cm =
32cm x 2cm x 1 cm =
2*8*8+2*8*1+2*8*1=128+16+16=160
2*32*2+2*32*1+2*2*1= 128+64+4=196
chyba
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2*8*8+2*8*1+2*8*1=128+16+16=160
2*32*2+2*32*1+2*2*1= 128+64+4=196
chyba