P=2ab+2bc+2ca
a=7cm, b=4cm, c=8cm
P=2*7*4+2*4*8+2*8*7=56+64+112=232cm2
P=2(ab+ac+bc)
Prostopadloscian ma 6 scian -3 pary jednakowych prostokatow
P=2(7*4+7*8+4*8)=2*116=232 cm²
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P=2ab+2bc+2ca
a=7cm, b=4cm, c=8cm
P=2*7*4+2*4*8+2*8*7=56+64+112=232cm2
P=2(ab+ac+bc)
Prostopadloscian ma 6 scian -3 pary jednakowych prostokatow
P=2(7*4+7*8+4*8)=2*116=232 cm²