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Find the diameter of the circle whose ar...

Find the diameter of the circle whose area is equal to the sum of the areas of two circles of diameters 20cm and 48 cm.

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The correct Answer is:
52 cm
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Knowledge Check

  • A circular wire of radius 7 cm is cut and arrange on the diameter of a circle with radius 12 cm. The angle subtended by it at the centre of the circle is …………

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    C
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    D
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    A
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    C
    `3xx10^(-4)` m
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    `4xx10^(-4)` m

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    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 circumference of the two circles.

    Answer the following by a number or a word or a sentence : If the area of a circle with radius r is same as the sum of areas of two circles with radii r_(1) and r_(2) . Find the relation between r, r_(1) and r_(2) .

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