The sum of circumferences of two circles is 110 cm. If the diameter of one circle is 28 cm, then the diameter of the other circle is
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the sum of the radii of the two circles is 140cm and the difference of their circumferences is 88 cm.find the diameters of the circles.
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Answer:
Sum of circumference of two circles = π(D+d) = 110 cm
22/7(D+d) =110
D+d=110×7/22
=35
D=35-28=7cm.
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