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वृत्ताकार पथ के बाहरी तथा आनतरिक परिमापों का अनुपात `23:22` है। यदि पथ 5 मीटर चौड़ा हो तो आन्तरिक भाग का व्यास ज्ञात करें?
A. 110 m
B. 55 m
C. 220 m
D. 230 m

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Correct Answer - C
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`(2piR)/(2pir)=23/22`
`R/r=23/22`
Let `R=23x, r=22x`
`:.R-r=5`
`23x-22x=5`
`x=5`
`implies r=22xx5=10`
आंतरिक वृत्त का व्यास
`=2r`
`=2xx110=220m`

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