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Perhatikan gambar. Garis yang panjangnya pada gambar adalah

Pertanyaan

Perhatikan gambar.



Garis yang panjangnya begin mathsize 14px style 2 straight a end style pada gambar adalah begin mathsize 14px style.... end style

  1. begin mathsize 14px style OB end style

  2. begin mathsize 14px style OC end style

  3. begin mathsize 14px style OD end style

  4. begin mathsize 14px style OE end style

Pembahasan Soal:

Kita gunakan Teorema Pythagoras untuk mencari setiap sisi miring segitiga karena semua segitiga berbentuk segitiga siku-siku.

Panjang begin mathsize 14px style OB end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row OB equals cell square root of OA squared plus AB squared end root end cell row blank equals cell square root of straight a squared plus straight a squared end root end cell row blank equals cell square root of 2 straight a squared end root end cell end table end style

Panjang begin mathsize 14px style OC end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row OC equals cell square root of OB squared plus BC squared end root end cell row blank equals cell square root of open parentheses square root of 2 straight a squared end root close parentheses squared plus straight a squared end root end cell row blank equals cell square root of 2 straight a squared plus straight a squared end root end cell row blank equals cell square root of 3 straight a squared end root end cell end table end style

Panjang begin mathsize 14px style OD end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row OD equals cell square root of OC squared plus CD squared end root end cell row blank equals cell square root of open parentheses square root of 3 straight a squared end root close parentheses squared plus straight a squared end root end cell row blank equals cell square root of 3 straight a squared plus straight a squared end root end cell row blank equals cell square root of 4 straight a squared end root end cell row blank equals cell 2 straight a end cell end table end style

Panjang begin mathsize 14px style OE end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row OE equals cell square root of OD squared plus DE squared end root end cell row blank equals cell square root of open parentheses 2 straight a close parentheses squared plus straight a squared end root end cell row blank equals cell square root of 4 straight a squared plus straight a squared end root end cell row blank equals cell square root of 5 straight a squared end root end cell end table end style

Jadi, jawaban yang tepat adalah C.

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 01 April 2021

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