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Volume bangun ruang gabungan di atas adalah ...

 


Volume bangun ruang gabungan di atas adalah ...space 

Jawaban:

Berdasarkan gambar, bangun ruang tersebut merupakan gabungan dari  dua balok

Balok pertama 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell straight p subscript 1 end cell equals cell 30 space cm end cell row cell straight l subscript 1 end cell equals cell 12 space cm end cell row cell straight t subscript 1 end cell equals cell 4 space cm end cell row blank blank blank row cell straight V subscript 1 end cell equals cell straight p subscript 1 cross times straight l subscript 1 cross times straight t subscript 1 end cell row blank equals cell 30 cross times 12 cross times 4 end cell row blank equals cell 1.440 space cm cubed end cell end table end style 

Balok kedua 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell straight p subscript 2 end cell equals cell 30 space cm end cell row cell straight l subscript 2 end cell equals cell 3 space cm end cell row cell straight t subscript 2 end cell equals cell 5 space cm end cell row blank blank blank row cell straight V subscript 2 end cell equals cell straight p subscript 2 cross times straight l subscript 2 cross times straight t subscript 2 end cell row blank equals cell 30 cross times 3 cross times 5 end cell row blank equals cell 450 space cm cubed end cell end table end style 

Volume bangun ruang tersebut adalah 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row straight V equals cell straight V subscript 1 plus straight V subscript 2 end cell row blank equals cell 1.440 plus 450 end cell row blank equals cell 1.890 space cm cubed end cell end table end style 

Jadi volume bangun ruang tersebut adalah begin mathsize 14px style 1.890 space cm cubed end style.  

 

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