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    Question

    If the side of square and its area is in the ratio of

    9:45 then find its perimeter?
    A 20 cm Correct Answer Incorrect Answer
    B 36 cm Correct Answer Incorrect Answer
    C 14 cm Correct Answer Incorrect Answer
    D 12 cm Correct Answer Incorrect Answer
    E 18 cm Correct Answer Incorrect Answer

    Solution

    Let the side of square = a cm. According to the question a:a2 = 9 : 45 ………….(1) ⇒ a = 45/9 cm Side = 5 cm Perimeter of square = 4 x side of square Perimeter of square = 4 x 5 = 20 cm

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