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c= 6cm + 4 cm = 10 cm
b = ?
korzystamy z twierdzenia Piagorasa
a^2 + b^2 = c^2
(6cm)^2 + b^2= (10 cm)^2
36 cm2 + b^2 = 100 cm2
b^2 = 100 cm2 - 36 cm2
b^2 = 64 cm2
b = √64 cm2
b = 8 cm
spr.
a^2 + b^2 = c^2
L = a^2 + b^2= (6 cm)^2 + (8 cm)^2= 36 cm2 + 64 cm2= 100 cm2
P = c^2= (10 cm)^2= 10 cm2
L=P
wzór na pole prostokąta
P = a*b
P = 6 cm * 8 cm = 48 cm2
Odp. Długość drugiego boku wynosi 8 cm a pole tego prostokąta wynosi 48 cm2.