the ratio of two concentric circles are 7 m and 9 m. the area enclosed between than
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n the given figure, the area enclosed between two concentric circles is 808.5 cm2. The circumference of the outer circle is 242 cm.
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Let the radius of the inner circle be r and the radius of the outer circle be R Area enclosed between the two concentric circles = pi(R^2 - r^2) Given ... More
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