15hallr
15hallr 15hallr
  • 26-04-2017
  • Mathematics
contestada

A TV has height:width in ratio 3:4. In a scale

drawing the height is 4.5cm.

What would the width be?

Respuesta :

katienwatkins
katienwatkins katienwatkins
  • 26-04-2017
Here, we need to set up the ratios.

height / width = 3 / 4

So, what is the width if the height is 4.5?

4.5 / width = 3/ 4

Cross multiply

18 = 3 width
6 = width
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