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The sum of the radii of …

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The sum of the radii of two circles is 7cm , and the difference of their circumference is 8cm . Find the circumference of the circles

    • Posted by Pareekshit Rai 2 years ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Arun Chaudhary 2 years ago

    r1+r2 =7cm equation 1 Difference of circumstances 2πr1-2πr2= 8 Taking 2 common So,πr1 -πr2 =4 equation 2 Subtract equation 1 and 2 We get r1=13/π and r2=9/π So circumstances of circle with r1 is 2π×13/π= 26cm r2 is 2π×9/π =18 cm

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