P=2xPp+Pb=2x30+180=240cm
Pp=1/2x12x5x3=30cm
Pb=12x5x3=180cm
Myślę że pomogłam:)
P = 2*Pp + Pb = 2*30 cm^2 + 180 cm^2 = 240 cm^2Pp = 1/2a*h = 1/2*12*5 = 30 cm^2Pb = 3*a*b = 12*5*3 = 180 cm^2
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P=2xPp+Pb=2x30+180=240cm
Pp=1/2x12x5x3=30cm
Pb=12x5x3=180cm
Myślę że pomogłam:)
P = 2*Pp + Pb = 2*30 cm^2 + 180 cm^2 = 240 cm^2
Pp = 1/2a*h = 1/2*12*5 = 30 cm^2
Pb = 3*a*b = 12*5*3 = 180 cm^2