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Perhatikan gambar di samping! Tentukan keliling segitiga ACD!

Pertanyaan


Perhatikan gambar di samping! Tentukan keliling segitiga ACD!

Pembahasan Soal:

table attributes columnalign right center left columnspacing 0px end attributes row cell A C end cell equals cell square root of A B squared plus B C squared end root end cell row blank equals cell square root of 12 squared plus 9 squared end root end cell row blank equals cell square root of 144 plus 81 end root end cell row blank equals cell square root of 225 end cell row blank equals cell 15 space cm end cell end table 

table attributes columnalign right center left columnspacing 0px end attributes row cell A D end cell equals cell square root of A C squared plus C D squared end root end cell row blank equals cell square root of 15 squared plus 8 squared end root end cell row blank equals cell square root of 225 plus 64 end root end cell row blank equals cell square root of 289 end cell row blank equals cell 17 space cm end cell end table 

table attributes columnalign right center left columnspacing 0px end attributes row cell Keliling space segitiga space A C D end cell equals cell A C plus C D plus A D end cell row blank equals cell 15 space cm plus 8 space cm plus 17 space cm end cell row blank equals cell 40 space cm end cell end table 

Dengan demikian, keliling segitiga ACD adalah 40 cm.

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 05 Mei 2021

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