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One of a diameter of a …

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One of a diameter of a rhombus is 12 cm and its area is 54 square centimetre the find the perimeter of rhombus

    • Posted by Creative Spark 4 years, 9 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Ritu Kumari 4 years, 9 months ago

    Area of rhombus = 1/2( d1 * d2) 54 sq. cm. = 1/2( 12cm*d2 ) 54*2/12. = d2 d2 = 9cm Side = √(d1/2)(d1/2)+(d2/2)(d2/2) = √(6)(6)+(4.5)(4.5) = √36+20.25 = √56.25 = 7.5cm Perimeter = 4*side = 4*7.5cm = 30 cm

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