Question 172922
lets call one side of the tandram x,and  the total area of the tandram {{{x^2}}}.
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we know the area of the small square is {{{(x/2sqrt(2))^2}}} by definition of tandram
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so the area that is white is {{{x^2-x^2/8}}}
:
 
Area of white pieces{{{highlight((7/8)x^2)}}}