zad1 a=5cm H=10cm Pp=5²=25cm² Pb=4*a*H=4*5*10=200cm² Pc=2Pp+Pb=2*25+200=50+200=250cm² V=PpH=25*10=250cm³ zad2 a=6cm H=4cm Pc=a²+2aH=6²+2*6*4=36+48=84cm² zad3 r=3cm H=10cm Pc=2πr²+2πrH=2*π*3²+2π*3*10=18π+60π=78πcm² zad4 R=2cm Pc=4πR²=4*2²π=4*4π=16πcm²
Zad :1 V = Pp x h a = 5 cm h = 10 cm Pp = a2 Pp = (5 cm)^2 Pp = 25 cm2 V = 25 cm2 x 10 cm V = 250 cm3 Pc = 2Pp + Pb Pśb = 5 cm x 10 cm Pśb = 50 cm2 Pc = 2 x 25 cm2 + 4 x 50 cm2 Pc = 50 cm2 + 200 cm2 Pc = 250 cm2 Zad :2 a = 6 cm h = 4 cm Pp = a2 Pp = (6cm)^2 Pp = 36 cm2 Pśb = 1/2ah Pśb = 1/2 x 6 cm x 4 cm Pśb = 12 cm2 Pc = Pp + Pb Pc = 36 cm2 + 4 x 12cm2 Pc = 36 cm2 + 48 cm2 Pc = 84 cm2 Zad :3 Pc = ? r = 3 cm h = 10 cm Pc = 2pi r (r+h) Pc = 2 pi x 3(3+10) Pc= 2pi x 3 x 13 Pc= 78 pi cm^2 Zad 4 r=2 cm Pc =4pi r^2 Pc= 4pi x 2^2 Pc= 4pi x 4 Pc= 16 pi cm^2