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Pc=2Pp+4Pb
Pb=a*H
Pc=108,5dm²
Pp=a²
Pp=3,5²=12,25 [dm²]
108,5=2*12,25+4*3,5*H
108,5=24,5+14H /-24,5
14H=84 /:14
H=6 [dm]
Pc=108,5 dm²
Pp=a²
Pb=4ah
a=3,5 dm
Pp=3,5²
Pp=12,25 dm²
108,5=2*12,25+4*3,5*h
108,5=24,5+14h
14h=108,5-24,5
14h=84
h=6 dm