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The length and breadth of a …

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The length and breadth of a rectangle are in the ratio of 4:3 if the diagnol measures 25cm than what is the perimeter of the rectangle?

    • Posted by Lakshay Bhatia 5 years, 5 months ago

    CBSE > Class 08 > Mathematics
    • 2 answers

    Neha Mishra 5 years, 5 months ago

    Kuttei

    0Thank You

    Yogita Ingle 5 years, 5 months ago

    Let x be the common multiple.
    Length = 4x
    Breadth = 3x
    According to Pythagoras theorem,
    (4x)²+(3x)²=(25)²
    16x²+9x²=625
    25x²=625
    x²=625/25
    X =5
    So,
    Length = 4x = 20 cm
    Breadth = 3x = 15 cm
    Perimeter = 2(l×b)
    = 2 (20 + 15)
    = 70 cm
    So, perimeter of rectangle is 70 cm.

    2Thank You

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