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Tentukan jarak dari: c.  dan

Tentukan jarak dari:

c. begin mathsize 14px style left parenthesis 12 comma space 7 right parenthesis end style dan begin mathsize 14px style left parenthesis 0 comma space 2 right parenthesis end style 

Jawaban:

Rumus jarak dua koordinat:

begin mathsize 14px style jarak equals square root of left parenthesis x subscript 2 minus x subscript 1 right parenthesis squared plus left parenthesis y subscript 2 minus y subscript 1 right parenthesis squared end root end style 

maka:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row Jarak equals cell square root of left parenthesis 0 minus 12 right parenthesis squared plus left parenthesis 2 minus 7 right parenthesis squared end root end cell row blank equals cell square root of left parenthesis negative 12 right parenthesis squared plus left parenthesis negative 5 right parenthesis squared end root end cell row blank equals cell square root of 144 plus 25 end root end cell row blank equals cell square root of 169 end cell row blank equals cell 13 space satuan space panjang end cell end table end style 

Jadi, jarak dari begin mathsize 14px style left parenthesis 12 comma space 7 right parenthesis end style dan begin mathsize 14px style left parenthesis 0 comma space 2 right parenthesis end style adalah 13 satuan panjang.

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