Question

    Find the area of a square, one of whose diagonals is 4.8

    m long. 
    A 12.5 m² Correct Answer Incorrect Answer
    B 10.5 m² Correct Answer Incorrect Answer
    C 9.5 m² Correct Answer Incorrect Answer
    D 11.5 m² Correct Answer Incorrect Answer

    Solution

    Let the side of the square be s In a square, the diagonal d is given by: d = s√2  d = 4.8,  s = 3.8/√2 = 2.4√2   Area of the square = s = (2.4√2)2 = 11.52 sq m

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