Odpowiedź:
Szczegółowe wyjaśnienie:
a=3
Pc=6a²
Pc=6*3²=6*9=54 j
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P=96 j²
Pc=6a²
96=6a²/:6
a²=16
a=√16=4
k=12a
k=12*4=48
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Pc=2ab+2bc+2ca
a=5, b=6, c=7
Pc=2*5*6+2*6*7+2*7*5=60+84+70=214 j²
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Pc=2ab+2bc+2ca
a=3, b=7, c=20
Pc=2*3*7+2*7*20+2*20*3=42+280+120=442 j²
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k=4(a+b+c)
a=6, b=7, c=8
k=4(6+7+8)=4*21=84
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Ps=b*c
b=4, c=7
Ps=4*7=28 j²
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Pc=2ab+2bc+2ca
a=1, b=3, c=7
Pc=2*1*3+2*3*7+2*7*1=6+42+14=62 j²
Pc=6a²
a=2
Pc=6*2²=6*4=24 j²------żółty
a=4, b=2, c=5
Pc=2*4*2+2*2*5+2*5*4=16+20+40=76 j²----niebieski
a=1, b=1, c=18
Pc=2*1*1+2*1*18+2*18*1=2+36+36=74 j²
