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Pertanyaan

Perhatikan gambar di samping. PVadalah perpanjangan garis berat △ PQR .Jikapanjang VR = 12 cm , QR = 26 cm , dan PQ = 20 cm , maka panjang PR adalah ....

Perhatikan gambar di samping. PV adalah perpanjangan garis berat . Jika panjang , dan , maka panjang PR adalah ....

  1. begin mathsize 14px style square root of 205 space cm end style 

  2. size 14px 2 square root of size 14px 205 size 14px space size 14px cm     

  3. begin mathsize 14px style 3 square root of 205 space cm end style 

  4. begin mathsize 14px style 4 square root of 205 space cm end style 

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L. Rante

Master Teacher

Mahasiswa/Alumni Universitas Negeri Makassar

Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah B

jawaban yang tepat adalah B

Pembahasan

Jadi jawaban yang tepat adalah B

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row QT equals cell RT equals 1 half cross times QR end cell row blank equals cell 1 half cross times 26 end cell row blank equals cell 13 space cm end cell row blank blank blank end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank QST end table table attributes columnalign right center left columnspacing 0px end attributes row blank approximately equal to blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank RTV end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank comma end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank maka end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank QS end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank VR end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 12 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cm end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row PS equals cell square root of PQ squared minus QS squared end root end cell row blank equals cell square root of 20 squared minus 12 squared end root end cell row blank equals cell square root of 256 end cell row PS equals cell 16 space cm space end cell row TV equals cell square root of RT squared minus RV squared end root end cell row blank equals cell square root of 13 squared minus 12 squared end root end cell row blank equals cell square root of 25 end cell row TV equals cell 5 space cm end cell end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank QST end table table attributes columnalign right center left columnspacing 0px end attributes row blank approximately equal to blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank RTV end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank comma end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank maka end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank ST end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight T end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight V end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 5 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cm end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row PR equals cell square root of PV squared plus VR squared end root end cell row blank equals cell square root of 26 squared plus 12 squared end root end cell row blank equals cell square root of 820 end cell row PR equals cell 2 square root of 205 space cm end cell end table end style 

Jadi jawaban yang tepat adalah B

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Gambar berikut menunjukkan trapesium PQRSdengan PS = QR = 15 cm dan tinggi trapesium 12 cm . Jika panjang SR = 10 cm maka panjang PQadalah ....

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