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The radii of two circles are 19 cm and 9...

The radii of two circles are 19 cm and 9 cm respectively. Find the radius of the circle which has circumference equal to the sum of the circumferences of the two circles.

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The correct Answer is:
28 cm,
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The radii of two circle are 19 cm and 9 cm respectively. Find the radius of the circle which has circumference equal to the sum of the circumferences of the two circles.

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Knowledge Check

  • The radii of two circles are 12 cm and 5 cm respectively . The radius of the circle, which has circumference equal to the sum of the circumferences of the two circles, is :

    A
    189 cm
    B
    7 cm
    C
    17 cm
    D
    119 cm
  • The radii of two circles are 12 cm and 7 cm respectively. The radius of the circle which has circumference equal to the sum of the circumference of the two circles is :

    A
    5 cm
    B
    9.2 cm
    C
    19cm
    D
    17 cm
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