Oblicz pole każdego z poniższych rombów.
1: 12m 18m
2:19dm 12 dm
3:25cm 17 cm
P=½12*18=108m²
P=½*24*36=432dm²
P=½25*17=212,5cm²
p=e*f/2 (/ przez)
p= 12m* 18m=216m/2= 108m
12dm *2= 24
19dm*2=38
24*38/2=912/2=456
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P=½12*18=108m²
P=½*24*36=432dm²
P=½25*17=212,5cm²
p=e*f/2 (/ przez)
p= 12m* 18m=216m/2= 108m
12dm *2= 24
19dm*2=38
24*38/2=912/2=456