  # If blue rectangle area is equal to the sum of 3 squares areas combined as in image, what is relation between a,b,c & d?

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If blue rectangle area is equal to the sum of 3 squares areas combined as in image, what is relation between a,b,c & d?  posted Aug 6, 2017

d=(a2+b2+c2)/(a+b+c) answer Aug 12, 2017

a^2+b^2+c^2=(a+b+c).d answer Aug 23, 2017

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