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    Question

    If the two adjacent sides of a rectangle are x cm and x

    – 10 cm and its perimeter is 124 cm then find its area? 
    A 551 cm² Correct Answer Incorrect Answer
    B 759 cm² Correct Answer Incorrect Answer
    C 936 cm² Correct Answer Incorrect Answer
    D 816 cm² Correct Answer Incorrect Answer

    Solution

    Let the length and breadth of rectangle = x and x – 10 cm Perimeter of rectangle = 2 x [Length + Breadth] According to the question Perimeter of rectangle = 124 cm ⇒ 2 x [Length + Breadth] = 124 ⇒  x + x – 10 = 62  ⇒ Length =  x = 36 cm Breadth = (x – 10) = 26 cm Area of rectangle = Length x Breadth Area of rectangle = 36 x 26 Area of rectangle = 936 cm²

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