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VTMO 2014 — Grade 9 — semifinal Question 14

VTMO · VTMO 2014 — Grade 9 — semifinal

Question 14

Which triangle has greatest area among sides $\left(6 , 8 , 8\right) , \left(6 , 9 , 8\right) , \left(6 , 10 , 8\right) , \left(6 , 11 , 8\right) , \left(6 , 12 , 8\right)$?
  1. $\left(6 , 8 , 8\right)$
  2. $\left(6 , 9 , 8\right)$
  3. $\left(6 , 10 , 8\right)$
  4. $\left(6 , 11 , 8\right)$
  5. $\left(6 , 12 , 8\right)$