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+0  
 
+1
80
1
avatar+893 

Answer: 110

 

What I did:

 Jul 31, 2019
 #1
avatar+103148 
+2

I think you just forgot to include the equilateral triangles of side length 1

 

50  of side length 1

 

16 + 16 =  32 of side length  2

 

9 + 9  =  18 of side length 3

 

4 + 4  =  8 of side length 4

 

1 + 1  = 2  of side length 5

 

So

 

50 + 32 + 18 + 8 + 2  =   110

 

 

 

 

cool cool cool

 Jul 31, 2019

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