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The width of a rectangle is 2/3 its length. Given that the perimeter of 2 such rectangles is 90 cm, find the width of the rectangle.

 
 Apr 29, 2021
 #1
avatar+118504 
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Since  the perimeter of two  such  rectangles =  90.....the  perimeter of one must  be  45

 

So

 

2 ( W + L)  = 45

 

2 ( (2/3)L  +  L)   = 45  

 

2  ( (5/3)L )  =  45

 

(10/3)L  =   45

 

L =  45 (3/10)  =   13.5

 

W  =  (2/3) (13.5)   =   9

 

 

cool cool cool

 
 Apr 29, 2021

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