Oblicz pole kwadratu o boku długości :
a)11cm b)40,2 dm c)3 ⅖(dwie piąte) m d) 2 m 7 cm
oblicz pole prostokąta :
6cm x12cm
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1. P = a*a
a) 11 * 11 = 121 cm2
b) 40,2 * 40,2 = 1616,04 dm2
c) 3 i 2/5m = 3,4m
3,4 * 3,4 = 11,56 m2
d) 2m 7cm = 2,07m
2,07 * 2,07 = 4,2849 m2
2. P = a*b
6 * 12 = 72 cm2