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एक शंकु के आकर का तम्बू बनाने में `264"मीटर"^(3)` कपडा लगा है। यदि तम्बू की तिर्यक ऊँचाई 12 मीटर हो तो उसकी ऊँचाई ज्ञात कीजिए।

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प्रश्नानुसार `l=12` मीटर
`rArr pi rl=264`
`rArr (22)/(7)xxrxx12=264`
`r=(264xx7)/(22xx12)=7` मीटर
तब `h=sqrt(l^(2)-r^(2))=sqrt((12)^(2)-(7)^(2))`
`=sqrt(144-49)=sqrt(95)` मीटर
`=9.75` मीटर

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