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The area of a ring is 942 cm2. If the radius of the larger circle (R) is 20 cm, then the radius of the smaller circle (r) is ___ cm. (Take π=3.14) |
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Answer» The area of a ring is 942 cm2. If the radius of the larger circle (R) is 20 cm, then the radius of the smaller circle (r) is |
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