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27. The area of the triangleOPQ with O(0,0), P(1,0) andQ(0,1) is*1 square unitO 1/2 square unitO O O OO 1/4 square unitO 2 square unit​

Answer»

HALF X. BASE. x HEIGHT. or

\sqrt{s}  \times {s - a} \times{ s - b} \times s - c



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