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a fost răspuns

Fie ABCD un dreptunghi:
a)Daca AB=13,5cm si BC=10cm,calculatii Aria ABCD
b)Daca Aria ABCD=192,5CM PATRATI ,AB=2,5 cm,calculati BC.
c) Daca aria ABCD=98cm patrati,AB=2BC,calculati AB,BC

Răspuns :

Saoirse1
a) A=Lxl=13,5x10=135 cm patrati
b) A=Lxl=> 192,5=2,5xBC=>BC=192,5/2,5=77 CM
c) A=ABxBC=>98=2BCxBC=>98=2BC PATRAT=>BC PATRAT=49=>BC=7=>  AB=14

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