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the circumference of two councenrtic circle forming a ring is 88 centimetre and 66cm find with of ring |
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Answer» Find the RADIUS of the outer RING: Circumference = 2πr 2πr = 88 r = 88 ÷ 2π r = 14 cm Find the radius of the INNER ring: Circumference = 2πr 2πr = 66 r = 66 ÷ 2π r = 10.5 cm Find the width of the ring: Width = 14 - 10.5 = 3.5 cm ANSWER: The width of the ring is 3.5 cm |
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