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Pertanyaan

Untuk soal 1 - 2 perhatikan gambar-gambar di bawah ini.

Tentukan luas permukaan tiap-tiap bangun.

  1. horizontal ellipsis 

  2. horizontal ellipsis 

F. Ayudhita

Master Teacher

Jawaban terverifikasi

Pembahasan

a. Tabung

Error converting from MathML to accessible text. 

b. Tabung

Error converting from MathML to accessible text. 

c. Tabung

Error converting from MathML to accessible text. 

d. Kerucut

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row straight t equals cell 12 space cm end cell row straight s equals cell 15 blank cm end cell end table end style 

mencari begin mathsize 14px style straight r end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell straight r squared end cell equals cell straight s squared minus straight t squared end cell row blank equals cell 15 squared minus 12 squared end cell row blank equals cell 225 minus 144 end cell row blank equals 81 row straight r equals cell 9 blank cm end cell end table end style 

mencari Luas Permukaan

Error converting from MathML to accessible text. 

e. Kerucut

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row straight d equals cell 16 space dm end cell row straight t equals cell 15 blank dm end cell row blank blank blank end table end style 

mencari begin mathsize 14px style straight s end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell s squared end cell equals cell straight r squared plus straight t squared end cell row blank equals cell 8 squared plus 15 squared end cell row blank equals cell 64 plus 225 end cell row blank equals 289 row straight s equals cell 17 space dm space end cell end table end style 

mencari Luas Permukaan

Error converting from MathML to accessible text. 

f. Kerucut

Error converting from MathML to accessible text. 

g. Bola

Error converting from MathML to accessible text. 

i. Bola

Error converting from MathML to accessible text. 

j. Tabung

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row straight d equals cell 12 blank straight m end cell row straight h equals cell 15 blank straight m end cell end table end style 

mencari undefined 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell straight t squared end cell equals cell straight h squared minus straight d squared end cell row blank equals cell 15 squared minus 12 squared end cell row blank equals cell 225 plus 144 end cell row blank equals 81 row straight t equals cell 9 blank straight m end cell end table end style 

mencari Luas Permukaan

Error converting from MathML to accessible text. 

k. Kerucut

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row straight r equals cell 6 space dm end cell row straight t equals cell 9 blank dm end cell row blank blank blank end table end style 

mencari undefined 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell text s end text squared end cell equals cell straight r squared plus straight t squared end cell row blank equals cell 9 squared plus 6 squared end cell row blank equals cell 81 plus 36 space space end cell row blank equals cell 117 space space end cell row straight s equals cell 3 √ 13 space space dm end cell end table end style 

mencari Luas Pemukaan

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row straight L equals cell straight pi cross times straight r left parenthesis straight r plus straight s right parenthesis space space end cell row blank equals cell straight pi cross times 6 left parenthesis 6 plus 3 √ 13 right parenthesis space space end cell row blank equals cell straight pi cross times 6 cross times 3 left parenthesis 2 plus √ 13 right parenthesis space space end cell row blank equals cell 18 straight pi left parenthesis 2 plus √ 13 right parenthesis space space end cell row blank equals cell 56 comma 52 left parenthesis 2 plus √ 13 right parenthesis space dm squared end cell end table end style 

l. Bola

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row straight d equals cell 16 space cm end cell row straight r equals cell 8 space cm end cell row straight L equals cell 4 cross times straight pi cross times straight r squared end cell row blank equals cell 4 cross times straight pi cross times 8 squared end cell row blank equals cell 256 straight pi end cell row blank equals cell 256 cross times 3 comma 14 end cell row blank equals cell 803 comma 84 space cm squared end cell end table end style 

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Untuk soal 8−11 perhatikan tabel di bawah ini. Bernalar. Suatu perusahaan coklat memproduksi tiga macam coklat yang berbentuk tabung, kerucut dan bola. Misalkan jari-jarinya adalah  r dan tinggi t . ...

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