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6,25x = 26 cm3 //6,25
x = 4,16
Teraz obliczamy pole.
(2,5*2,5) * 2 = 12,5 cm2
(2,5*4,16)*4 = 41,6 cm2
12,5 + 41,6 = 54,1 cm2
V=a^2 *h
h=V\a^2=26\6,25=4,16
P=2*a^2+4a*h=12,5+41,6=54,1 cm^2
mam nadzieje ze pomoglem
26=2,5*2,5*c
26=6,25*c
c=26/6,25
c=4,16
Pp=2*2,5*2,5=12,5 cm²
Pb=4*2,5*4,16=41,6 cm²
Pc=12,5+41,6=54,1 cm²