Odpowiedzi

2009-11-04T21:46:27+01:00
Pp = ab
a = 18cm
b = 8cm

Pp = 18cm * 8cm = 144 cm

Pk = a^2
144 = a^2
a = pierw. 144 = 12 (cm)

odp. bok kwadratu ma dlugosc 12 cm
2 3 2
2009-11-04T21:47:11+01:00
Pkw=Ppr
Ppr=a*b=18*8=144
Pkw=a²
144=a²
a=√144
a=12
3 4 3
2009-11-04T21:49:57+01:00
Pole prostokata= a*b
Pp=18*8
Pp=144cm²=pole kwadratu
Pk=144cm2=a*a
a²=144
a=√144=12cm
5 3 5