Odpowiedź:
P=a x b
P=72 cm2
a)
a = 6cm
6cm x b=72cm2
b= 72cm2 :6cm
b= 12cm
b) a x 18cm=72cm2
a= 72cm2:18cm
a=4 cm
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Odpowiedź:
P=a x b
P=72 cm2
a)
a = 6cm
6cm x b=72cm2
b= 72cm2 :6cm
b= 12cm
b) a x 18cm=72cm2
a= 72cm2:18cm
a=4 cm