Respuesta :

The ratio will be same

  • Let width be x

[tex]\\ \sf\longmapsto \dfrac{3}{5}=\dfrac{12}{x}[/tex]

[tex]\\ \sf\longmapsto 3x=5(12)[/tex]

[tex]\\ \sf\longmapsto 3x=60[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{60}{3}[/tex]

[tex]\\ \sf\longmapsto x=20cm[/tex]

dinithisula

Answer:

width=20 cm

Step-by-step explanation:

h=3 cm

w=5 cm

proportional rectangle:

   height=12

  • Here height has become 12 by multiplying 3 by 4.Therefore to find the width do the same thing.

 width=5*4

          =20 cm