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

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