Find the area of a ring whose outer and inner radii are respectively 23 cm and 12 cm...
Learn Problems on Rings and Semicircles in 3 minutes.
Find the area of a ring whose outer and inner radii are 19 cm and 16 cm respectively.A. $330\\text{ cm}^{2}$ B. $310\\text{ cm}^{2}$ C. $320\\text{ cm}^{2}$ D. $350\\text{ cm}^{2}$
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Let R and r denotes the radii of outer and inner circles respectively, then area of the circular ring is calculated using the formula:
Find the area of a flat circular ring formed by two concentric circles (circles with same center) whose radii are 9 cm and 5cm.
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