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    Question

    Find the area of triangle having sides 3m, 4m, and

    5m.
    A 6 cm² Correct Answer Incorrect Answer
    B 30 cm² Correct Answer Incorrect Answer
    C 84 cm² Correct Answer Incorrect Answer
    D 210 cm² Correct Answer Incorrect Answer

    Solution

    As sides 3, 4 & 5 is a Pythagoras triplet means 3 2 + 4 2 = 5 2 ; this is a right angle triangle. So area of this triangle = 1/2 × base × height = (1/2) × 3 × 4 = 6 cm 2

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