Question

Oblicz pole rombu o przekątnych

a) 0,03m i 12cm b) 4dm i 1,2m c) 1/4m i 0,4dm

pilne dam naj plissss

Answer 1

P = (1/2) e*f

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a) P = (1/2) * 3 cm * 12 cm = 18 cm^2

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b) P = (1/2)* 4 dm *12 dm = 24 dm^2

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c) P = (1/2) * 25 cm * 4 cm = 50 cm^2

lub

P = (1/2)*2, 5 dm * 0,4 dm = 0,5 dm^2

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Answer 2

a) p=(3*12):2

p=36:2

p=18cm^2

b)p=(40*120):2

p=4800:2

p=2400cm^2 ->24m^2

c)p=(0,25*4):2          

p=1:2

p=0,5cm^2