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एक लंबवृत्तीय शंकु का आयतन `125"सेमी"^(3)` है तथा ऊँचाई `15` सेमी है, शंकु के आधार का क्षेत्रफल ज्ञात कीजिए।

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एक लंबवृत्तीय शंकु का आयतन `125"सेमी"^(3)` है तथा ऊँचाई `15` सेमी है, शंकु के आधार का क्षेत्रफल ज्ञात कीजिए।
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शंकु का आयतन `=(1)/(3)xx` आधार का क्षेत्रफल `xx` ऊँचाई
`rArr 125=(1)/(3)xx` आधार का क्षेत्रफल `xx15`
`rArr (125xx3)/(15)=` आधार का क्षेत्रफल
`:.` आधार का क्षेत्रफल =`25"सेमी"^(2)`
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