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Jika volume D 1 ​ diputar terhadap sumbu – X dan daerah D 2 ​ diputar terhadap sumbu – Y, lalu volume dan bernilai sama maka nilai a adalah…

Jika volume  diputar terhadap sumbu – X dan daerah  diputar terhadap sumbu – Y, lalu volume begin mathsize 14px style D subscript 1 end style dan begin mathsize 14px style D subscript 2 end style bernilai sama maka nilai a adalah…

  1. 1

  2. begin mathsize 14px style 1 over 8 end style

  3. begin mathsize 14px style 3 over 8 end style

  4. begin mathsize 14px style 5 over 8 end style

  5. begin mathsize 14px style 7 over 8 end style

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H. Eka

Master Teacher

Mahasiswa/Alumni Universitas Pendidikan Indonesia

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Volume daerah = Volume daerah

Volume daerah begin mathsize 14px style D subscript 1 end style = Volume daerah  begin mathsize 14px style D subscript 2 end style

begin mathsize 14px style pi integral subscript 0 superscript a open parentheses a squared close parentheses squared minus open parentheses x squared close parentheses squared space d x equals pi integral subscript 0 superscript a squared end superscript a squared minus open parentheses square root of y close parentheses squared d y integral subscript 0 superscript a open parentheses a to the power of 4 minus x to the power of 4 close parentheses space d x equals integral subscript 0 superscript a squared end superscript open parentheses a squared minus y close parentheses space d y a to the power of 4 x minus 1 fifth x to the power of 5 open table row a row 0 end table close square brackets equals a squared y minus 1 half y squared open table row cell a squared end cell row 0 end table close square brackets a to the power of 4 open parentheses a close parentheses minus 1 fifth open parentheses a to the power of 5 close parentheses equals a squared open parentheses a squared close parentheses minus 1 half open parentheses a squared close parentheses squared a to the power of 5 minus 1 fifth a to the power of 5 equals a to the power of 4 minus 1 half a to the power of 4 4 over 5 a to the power of 5 equals 1 half a to the power of 4 a to the power of 5 over a to the power of 4 equals 1 half open parentheses 5 over 4 close parentheses a equals 5 over 8 end style

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Jika volume D 1 ​ diputar terhadap sumbu – Y dan volume daerah D 2 ​ diputar terhadap sumbu – X sama, maka nilai a adalah…

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