Of the

Of the formula S = the surface of the cuboid S=2. (ab+ac+bc) express unknown c. C =?

Result

c = (Correct answer is: (S/2 -ab)/(a+b)) Wrong answer

Solution:

S=2 (a b+a c+b c)  S/2=ab+bc+ac S/2ab=bc+ac S/2ab=c(b+a)  c=(S/2ab)/(a+b)



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