वृतकार वलय का क्षेत्रफल ज्ञात करो जिसकी बाह्य तथा आन्तरिक त्रिज्याएँ क्रमशः 14 सेमी तथा 7 सेमी है
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43@
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ylttjgigjnvjvjchdgcnkn I don't know about it OK bye I tell xt it OK bye I tell you 69+(6838
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