Verified Answer :

area of a triangle=bh/2, area of a square is side squared

a=7x4=28/2=14, and since there are 3 triangles multiply and get 42
 a=7x7=49
42+49=91

WinterH

Gotcha. 

So to find the triangles it's going to be 74 which is 28 then divide it by 2. 
This is 14, so the area of one half, of the bigger triangle is 14, then add 14 6 times or just times it by 6. Which is 84.

Now find the area of the square which is 77 and that's 49. So add 84 and 49 and that's your answer.

Which means it's 133 :)

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