Răspuns:
a)8cm;12cm
b)10cm;25cm
Explicație pas cu pas:
A____/____B____/_____/____C
a)AC=20cm. AB/BC=2/3
AB=2/3 BC
AC=5segmente=20cm
1segment 20:5=4cm
AB=2×4=8cm
BC=3×4=12cm
b)AC=3,5dm=35cm. AB/BC=5/2
AB=2/5BC
A___/___B___/___/___/___/___C
AC=7segmente=35cm
1segment=35:7=5cm
AB=2×5=10cm
BC=5×5=25cm
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Răspuns:
a)8cm;12cm
b)10cm;25cm
Explicație pas cu pas:
A____/____B____/_____/____C
a)AC=20cm. AB/BC=2/3
AB=2/3 BC
AC=5segmente=20cm
1segment 20:5=4cm
AB=2×4=8cm
BC=3×4=12cm
b)AC=3,5dm=35cm. AB/BC=5/2
AB=2/5BC
A___/___B___/___/___/___/___C
AC=7segmente=35cm
1segment=35:7=5cm
AB=2×5=10cm
BC=5×5=25cm