Odpowiedź:
a) P = a • b
a = 8 cm
b = 17 cm
P = 8 • 17
P = 136 cm2
b) P = a • b
a = 24 mm
b = 3 mm
P = 24 • 3
P = 72 mm2
c) P = a • b
a = 10 dm
b = 23 dm
P = 10 • 23
P = 230 dm2
d) P = a • b
a = 20 m
b = 25 m
P = 20 • 25
P = 500 m2
e) P = a • b
a = 6 m = 600 cm
b = 12 cm
P = 600 • 12
P = 7200 cm2
f) P = a • b
a = 11 cm
b = 81 mm = 8,1 cm
P = 11 • 8,1
P = 89,1 cm2
Pozdrawiam.