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Work out the length and width of rectangle ABCD:

 

 May 28, 2018
 #1
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These are similar figures.

The perimeter of the little one is 16cm and the perimeter of the big one is 40cm

40/16=2.5

So all the length dimensions of the big one are 2.5 times that of the little one.

6*2.5=15cm

2*2.5=5cm

 

So the big one is 15cm by 5cm

 May 28, 2018

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