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PC=6*1,44=8,64
V=ABH
V=A³
V=1,728
P=2(2x10+10x0,5+2x0,5)
P=2(20+5+1)
P=40+10+2=52 cm²
V=2x10x0,5=10cm³
b) P=6a² (najlepiej zamienić to sobie na mm)
P=6 x (12)² = 6x144 = 864mm²
V=a³
V=1728mm³
pole:
a = 1,2cm
P = 6 *a *a
P = 6 * 1,2cm * 1,2cm
P = 8,64 cm²
objętość:
V = a * a * a
V = 1,728 cm³
prostopadłościan:
pole:
a = 2cm
b = 1dm = 10 cm
c = 5mm = 0,5cm
P = 2* a*b+2*a*c+2*b*c
p = 2*2*10+2*2*0,5+2*10*0,5
p = 52 cm²
objętość:
V = a*b*c
V = 2cm*10cm*0,5cm
V = 10 cm³