SOLUTION: A large square is built from a 7-piece tangram set. If the small square in the set is painted red and all of the other pieces are painted white, what percent of the large tangram s

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Question 172922: A large square is built from a 7-piece tangram set. If the small square in the set is painted red and all of the other pieces are painted white, what percent of the large tangram square is white?
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
lets call one side of the tandram x,and the total area of the tandram x%5E2.
:
we know the area of the small square is %28x%2F2sqrt%282%29%29%5E2 by definition of tandram
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so the area that is white is x%5E2-x%5E2%2F8
:

Area of white pieceshighlight%28%287%2F8%29x%5E2%29