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http://prntscr.com/mdc8kq

 Jan 28, 2019
 #1
avatar+99523 
+1

We have this relationship

 

NW / NO = NO / NS

 

NW / 6  =  6 / 8

 

NW =  36 / 8   =    9/2  =  4.5

 

So....using the Pythagorean Theorem

 

WO =  sqrt ( 6^2 + 4.5^2 )  =  sqrt (56.25)  = 7.5

 

So....the perimeter is

 

WO + NW + NS + SO =

 

7.5 + 4.5 + 8 + 10   =

 

12 + 8 + 10 =

 

30

 

 

cool cool cool

 Jan 28, 2019

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